/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 BIGGEST_EQUIVALENCE_CLASS --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/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:50:29,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:50:29,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:50:29,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:50:29,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:50:29,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:50:29,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:50:29,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:50:29,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:50:29,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:50:29,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:50:29,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:50:29,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:50:29,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:50:29,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:50:29,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:50:29,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:50:29,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:50:29,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:50:29,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:50:29,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:50:29,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:50:29,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:50:29,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:50:29,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 23:50:29,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 23:50:29,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 23:50:29,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 23:50:29,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 23:50:29,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 23:50:29,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 23:50:29,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 23:50:29,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 23:50:29,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 23:50:29,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 23:50:29,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 23:50:29,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 23:50:29,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 23:50:29,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:50:29,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:50:29,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:50:29,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 23:50:29,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:50:29,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:50:29,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:50:29,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:50:29,733 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:50:29,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:50:29,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:50:29,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:50:29,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:50:29,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:50:29,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:50:29,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:50:29,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:50:29,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:50:29,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:50:29,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:50:29,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:50:29,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:50:29,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:50:29,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:50:29,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:50:29,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:50:29,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:50:29,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:50:29,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:50:29,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:50:29,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:29,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:50:29,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:50:29,738 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 23:50:30,049 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:50:30,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:50:30,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:50:30,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:50:30,077 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:50:30,079 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 23:50:30,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c83c89c/19cb96748ec7490d82d280002310ca8c/FLAGaf214c520 [2020-07-21 23:50:30,880 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:50:30,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 23:50:30,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c83c89c/19cb96748ec7490d82d280002310ca8c/FLAGaf214c520 [2020-07-21 23:50:31,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c83c89c/19cb96748ec7490d82d280002310ca8c [2020-07-21 23:50:31,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:50:31,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:50:31,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:50:31,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:50:31,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:50:31,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:50:31" (1/1) ... [2020-07-21 23:50:31,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729ee2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:31, skipping insertion in model container [2020-07-21 23:50:31,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:50:31" (1/1) ... [2020-07-21 23:50:31,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:50:31,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:50:32,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:50:32,582 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:50:33,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:50:33,589 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:50:33,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33 WrapperNode [2020-07-21 23:50:33,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:50:33,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:50:33,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:50:33,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:50:33,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33" (1/1) ... [2020-07-21 23:50:33,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33" (1/1) ... [2020-07-21 23:50:33,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33" (1/1) ... [2020-07-21 23:50:33,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33" (1/1) ... [2020-07-21 23:50:33,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33" (1/1) ... [2020-07-21 23:50:33,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33" (1/1) ... [2020-07-21 23:50:33,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33" (1/1) ... [2020-07-21 23:50:33,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:50:33,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:50:33,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:50:33,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:50:33,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:50:33,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:50:33,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:50:33,894 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:50:33,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:50:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:50:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 23:50:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-21 23:50:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 23:50:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-21 23:50:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:50:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:50:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-21 23:50:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-21 23:50:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-21 23:50:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-21 23:50:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-21 23:50:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-21 23:50:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-21 23:50:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 23:50:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:50:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:50:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:50:37,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:50:37,151 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 23:50:37,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:50:37 BoogieIcfgContainer [2020-07-21 23:50:37,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:50:37,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:50:37,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:50:37,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:50:37,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:50:31" (1/3) ... [2020-07-21 23:50:37,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6960585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:50:37, skipping insertion in model container [2020-07-21 23:50:37,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:50:33" (2/3) ... [2020-07-21 23:50:37,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6960585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:50:37, skipping insertion in model container [2020-07-21 23:50:37,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:50:37" (3/3) ... [2020-07-21 23:50:37,172 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 23:50:37,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:50:37,197 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-21 23:50:37,212 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-21 23:50:37,243 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:50:37,243 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:50:37,243 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:50:37,243 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:50:37,243 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:50:37,244 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:50:37,244 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:50:37,244 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:50:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-07-21 23:50:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-21 23:50:37,318 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:37,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:37,321 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:37,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:37,331 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-07-21 23:50:37,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:37,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832636553] [2020-07-21 23:50:37,342 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 [2020-07-21 23:50:37,871 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:50:37,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:37,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:50:37,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:38,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:38,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832636553] [2020-07-21 23:50:38,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:38,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:50:38,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112433739] [2020-07-21 23:50:38,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:50:38,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:38,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:50:38,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:50:38,166 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-07-21 23:50:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:38,580 INFO L93 Difference]: Finished difference Result 2994 states and 5361 transitions. [2020-07-21 23:50:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:50:38,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-21 23:50:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:38,614 INFO L225 Difference]: With dead ends: 2994 [2020-07-21 23:50:38,614 INFO L226 Difference]: Without dead ends: 1983 [2020-07-21 23:50:38,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:50:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2020-07-21 23:50:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1886. [2020-07-21 23:50:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2020-07-21 23:50:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2875 transitions. [2020-07-21 23:50:38,802 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2875 transitions. Word has length 324 [2020-07-21 23:50:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:38,803 INFO L479 AbstractCegarLoop]: Abstraction has 1886 states and 2875 transitions. [2020-07-21 23:50:38,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:50:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2875 transitions. [2020-07-21 23:50:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-21 23:50:38,811 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:38,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:39,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:39,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:39,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2062413201, now seen corresponding path program 1 times [2020-07-21 23:50:39,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:39,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528237185] [2020-07-21 23:50:39,030 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 [2020-07-21 23:50:39,356 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:50:39,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:39,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:50:39,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:39,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:39,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528237185] [2020-07-21 23:50:39,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:39,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:50:39,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198586130] [2020-07-21 23:50:39,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:50:39,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:39,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:50:39,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:39,534 INFO L87 Difference]: Start difference. First operand 1886 states and 2875 transitions. Second operand 3 states. [2020-07-21 23:50:39,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:39,676 INFO L93 Difference]: Finished difference Result 5617 states and 8561 transitions. [2020-07-21 23:50:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:50:39,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-21 23:50:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:39,698 INFO L225 Difference]: With dead ends: 5617 [2020-07-21 23:50:39,698 INFO L226 Difference]: Without dead ends: 3754 [2020-07-21 23:50:39,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2020-07-21 23:50:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 1897. [2020-07-21 23:50:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1897 states. [2020-07-21 23:50:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2891 transitions. [2020-07-21 23:50:39,812 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2891 transitions. Word has length 326 [2020-07-21 23:50:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:39,812 INFO L479 AbstractCegarLoop]: Abstraction has 1897 states and 2891 transitions. [2020-07-21 23:50:39,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:50:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2891 transitions. [2020-07-21 23:50:39,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-21 23:50:39,820 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:39,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:40,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:40,032 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:40,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2015397068, now seen corresponding path program 1 times [2020-07-21 23:50:40,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:40,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838767324] [2020-07-21 23:50:40,035 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 [2020-07-21 23:50:40,356 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:50:40,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:40,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:50:40,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:40,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:40,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838767324] [2020-07-21 23:50:40,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:40,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:50:40,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353122644] [2020-07-21 23:50:40,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:50:40,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:40,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:50:40,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:40,518 INFO L87 Difference]: Start difference. First operand 1897 states and 2891 transitions. Second operand 3 states. [2020-07-21 23:50:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:40,735 INFO L93 Difference]: Finished difference Result 5450 states and 8261 transitions. [2020-07-21 23:50:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:50:40,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-21 23:50:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:40,755 INFO L225 Difference]: With dead ends: 5450 [2020-07-21 23:50:40,755 INFO L226 Difference]: Without dead ends: 3704 [2020-07-21 23:50:40,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2020-07-21 23:50:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 3609. [2020-07-21 23:50:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3609 states. [2020-07-21 23:50:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 5493 transitions. [2020-07-21 23:50:40,905 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 5493 transitions. Word has length 326 [2020-07-21 23:50:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:40,906 INFO L479 AbstractCegarLoop]: Abstraction has 3609 states and 5493 transitions. [2020-07-21 23:50:40,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:50:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 5493 transitions. [2020-07-21 23:50:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 23:50:40,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:40,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:41,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:41,131 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash -31255730, now seen corresponding path program 1 times [2020-07-21 23:50:41,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:41,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046407596] [2020-07-21 23:50:41,134 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 [2020-07-21 23:50:41,411 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:50:41,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:41,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:50:41,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:41,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:41,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046407596] [2020-07-21 23:50:41,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:41,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:50:41,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446424480] [2020-07-21 23:50:41,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:50:41,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:41,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:50:41,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:41,562 INFO L87 Difference]: Start difference. First operand 3609 states and 5493 transitions. Second operand 3 states. [2020-07-21 23:50:41,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:41,799 INFO L93 Difference]: Finished difference Result 10732 states and 16325 transitions. [2020-07-21 23:50:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:50:41,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-21 23:50:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:41,836 INFO L225 Difference]: With dead ends: 10732 [2020-07-21 23:50:41,836 INFO L226 Difference]: Without dead ends: 7173 [2020-07-21 23:50:41,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7173 states. [2020-07-21 23:50:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7173 to 3625. [2020-07-21 23:50:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3625 states. [2020-07-21 23:50:42,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5512 transitions. [2020-07-21 23:50:42,046 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5512 transitions. Word has length 327 [2020-07-21 23:50:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:42,046 INFO L479 AbstractCegarLoop]: Abstraction has 3625 states and 5512 transitions. [2020-07-21 23:50:42,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:50:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5512 transitions. [2020-07-21 23:50:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-21 23:50:42,058 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:42,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:42,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:42,272 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:42,273 INFO L82 PathProgramCache]: Analyzing trace with hash 986560295, now seen corresponding path program 1 times [2020-07-21 23:50:42,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:42,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968566990] [2020-07-21 23:50:42,274 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 [2020-07-21 23:50:42,553 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:50:42,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:42,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:50:42,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:42,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:42,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968566990] [2020-07-21 23:50:42,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:42,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:50:42,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379031835] [2020-07-21 23:50:42,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:50:42,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:42,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:50:42,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:50:42,683 INFO L87 Difference]: Start difference. First operand 3625 states and 5512 transitions. Second operand 4 states. [2020-07-21 23:50:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:42,969 INFO L93 Difference]: Finished difference Result 8029 states and 12208 transitions. [2020-07-21 23:50:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:50:42,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-07-21 23:50:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:42,989 INFO L225 Difference]: With dead ends: 8029 [2020-07-21 23:50:42,989 INFO L226 Difference]: Without dead ends: 4106 [2020-07-21 23:50:42,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:50:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2020-07-21 23:50:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4011. [2020-07-21 23:50:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4011 states. [2020-07-21 23:50:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 6080 transitions. [2020-07-21 23:50:43,147 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 6080 transitions. Word has length 328 [2020-07-21 23:50:43,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:43,148 INFO L479 AbstractCegarLoop]: Abstraction has 4011 states and 6080 transitions. [2020-07-21 23:50:43,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:50:43,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 6080 transitions. [2020-07-21 23:50:43,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 23:50:43,160 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:43,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:43,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:43,374 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:43,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:43,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1806349788, now seen corresponding path program 1 times [2020-07-21 23:50:43,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:43,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398592178] [2020-07-21 23:50:43,377 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 [2020-07-21 23:50:43,688 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:50:43,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:43,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:50:43,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:43,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:43,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398592178] [2020-07-21 23:50:43,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:43,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:50:43,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101092409] [2020-07-21 23:50:43,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:50:43,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:43,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:50:43,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:43,921 INFO L87 Difference]: Start difference. First operand 4011 states and 6080 transitions. Second operand 3 states. [2020-07-21 23:50:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:44,224 INFO L93 Difference]: Finished difference Result 11674 states and 17649 transitions. [2020-07-21 23:50:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:50:44,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 23:50:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:44,273 INFO L225 Difference]: With dead ends: 11674 [2020-07-21 23:50:44,273 INFO L226 Difference]: Without dead ends: 7891 [2020-07-21 23:50:44,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2020-07-21 23:50:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 7779. [2020-07-21 23:50:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7779 states. [2020-07-21 23:50:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7779 states to 7779 states and 11759 transitions. [2020-07-21 23:50:44,596 INFO L78 Accepts]: Start accepts. Automaton has 7779 states and 11759 transitions. Word has length 330 [2020-07-21 23:50:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:44,598 INFO L479 AbstractCegarLoop]: Abstraction has 7779 states and 11759 transitions. [2020-07-21 23:50:44,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:50:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7779 states and 11759 transitions. [2020-07-21 23:50:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 23:50:44,624 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:44,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:44,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:44,839 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:44,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1902296543, now seen corresponding path program 1 times [2020-07-21 23:50:44,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:44,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153927180] [2020-07-21 23:50:44,840 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 [2020-07-21 23:50:45,121 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:50:45,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:45,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:50:45,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:45,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:45,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153927180] [2020-07-21 23:50:45,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:45,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:50:45,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837523918] [2020-07-21 23:50:45,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:50:45,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:45,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:50:45,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:50:45,268 INFO L87 Difference]: Start difference. First operand 7779 states and 11759 transitions. Second operand 4 states. [2020-07-21 23:50:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:45,732 INFO L93 Difference]: Finished difference Result 22093 states and 33182 transitions. [2020-07-21 23:50:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:50:45,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-21 23:50:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:45,767 INFO L225 Difference]: With dead ends: 22093 [2020-07-21 23:50:45,767 INFO L226 Difference]: Without dead ends: 15099 [2020-07-21 23:50:45,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:50:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15099 states. [2020-07-21 23:50:46,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15099 to 8354. [2020-07-21 23:50:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8354 states. [2020-07-21 23:50:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 12728 transitions. [2020-07-21 23:50:46,160 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 12728 transitions. Word has length 330 [2020-07-21 23:50:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:46,161 INFO L479 AbstractCegarLoop]: Abstraction has 8354 states and 12728 transitions. [2020-07-21 23:50:46,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:50:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 12728 transitions. [2020-07-21 23:50:46,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 23:50:46,181 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:46,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:46,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:46,396 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:46,397 INFO L82 PathProgramCache]: Analyzing trace with hash 770301040, now seen corresponding path program 1 times [2020-07-21 23:50:46,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:46,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447258426] [2020-07-21 23:50:46,398 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:46,815 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:50:46,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:46,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 23:50:46,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:47,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:47,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447258426] [2020-07-21 23:50:47,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:47,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 23:50:47,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572327767] [2020-07-21 23:50:47,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 23:50:47,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:47,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 23:50:47,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 23:50:47,054 INFO L87 Difference]: Start difference. First operand 8354 states and 12728 transitions. Second operand 8 states. [2020-07-21 23:50:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:49,620 INFO L93 Difference]: Finished difference Result 18514 states and 28098 transitions. [2020-07-21 23:50:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 23:50:49,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-07-21 23:50:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:49,649 INFO L225 Difference]: With dead ends: 18514 [2020-07-21 23:50:49,649 INFO L226 Difference]: Without dead ends: 13342 [2020-07-21 23:50:49,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-21 23:50:49,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13342 states. [2020-07-21 23:50:50,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13342 to 10618. [2020-07-21 23:50:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10618 states. [2020-07-21 23:50:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10618 states to 10618 states and 16048 transitions. [2020-07-21 23:50:50,120 INFO L78 Accepts]: Start accepts. Automaton has 10618 states and 16048 transitions. Word has length 330 [2020-07-21 23:50:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:50,121 INFO L479 AbstractCegarLoop]: Abstraction has 10618 states and 16048 transitions. [2020-07-21 23:50:50,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 23:50:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10618 states and 16048 transitions. [2020-07-21 23:50:50,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 23:50:50,138 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:50,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:50,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:50,353 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:50,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:50,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2070422866, now seen corresponding path program 1 times [2020-07-21 23:50:50,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:50,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919994349] [2020-07-21 23:50:50,356 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 [2020-07-21 23:50:50,686 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:50:50,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:50,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:50:50,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:50,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:50,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919994349] [2020-07-21 23:50:50,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:50,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:50:50,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16538071] [2020-07-21 23:50:50,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:50:50,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:50,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:50:50,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:50,849 INFO L87 Difference]: Start difference. First operand 10618 states and 16048 transitions. Second operand 3 states. [2020-07-21 23:50:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:51,349 INFO L93 Difference]: Finished difference Result 20460 states and 30827 transitions. [2020-07-21 23:50:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:50:51,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 23:50:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:51,379 INFO L225 Difference]: With dead ends: 20460 [2020-07-21 23:50:51,379 INFO L226 Difference]: Without dead ends: 12666 [2020-07-21 23:50:51,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:51,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12666 states. [2020-07-21 23:50:52,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12666 to 11312. [2020-07-21 23:50:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11312 states. [2020-07-21 23:50:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11312 states to 11312 states and 17190 transitions. [2020-07-21 23:50:52,678 INFO L78 Accepts]: Start accepts. Automaton has 11312 states and 17190 transitions. Word has length 330 [2020-07-21 23:50:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:52,679 INFO L479 AbstractCegarLoop]: Abstraction has 11312 states and 17190 transitions. [2020-07-21 23:50:52,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:50:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 11312 states and 17190 transitions. [2020-07-21 23:50:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 23:50:52,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:52,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:52,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:52,912 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:52,912 INFO L82 PathProgramCache]: Analyzing trace with hash -813925772, now seen corresponding path program 1 times [2020-07-21 23:50:52,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:52,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132470426] [2020-07-21 23:50:52,913 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 [2020-07-21 23:50:53,185 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:50:53,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:53,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:50:53,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:53,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:53,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132470426] [2020-07-21 23:50:53,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:53,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:50:53,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779012113] [2020-07-21 23:50:53,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:50:53,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:53,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:50:53,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:53,245 INFO L87 Difference]: Start difference. First operand 11312 states and 17190 transitions. Second operand 3 states. [2020-07-21 23:50:53,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:53,957 INFO L93 Difference]: Finished difference Result 33365 states and 50646 transitions. [2020-07-21 23:50:53,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:50:53,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 23:50:53,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:53,995 INFO L225 Difference]: With dead ends: 33365 [2020-07-21 23:50:53,996 INFO L226 Difference]: Without dead ends: 22369 [2020-07-21 23:50:54,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22369 states. [2020-07-21 23:50:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22369 to 11409. [2020-07-21 23:50:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11409 states. [2020-07-21 23:50:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11409 states to 11409 states and 17315 transitions. [2020-07-21 23:50:54,579 INFO L78 Accepts]: Start accepts. Automaton has 11409 states and 17315 transitions. Word has length 330 [2020-07-21 23:50:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:54,579 INFO L479 AbstractCegarLoop]: Abstraction has 11409 states and 17315 transitions. [2020-07-21 23:50:54,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:50:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 11409 states and 17315 transitions. [2020-07-21 23:50:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 23:50:54,595 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:54,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:54,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:54,810 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:54,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:54,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1898246203, now seen corresponding path program 1 times [2020-07-21 23:50:54,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:54,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618429154] [2020-07-21 23:50:54,812 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 [2020-07-21 23:50:55,072 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:50:55,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:55,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:50:55,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:55,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:55,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618429154] [2020-07-21 23:50:55,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:55,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:50:55,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003226637] [2020-07-21 23:50:55,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:50:55,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:55,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:50:55,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:55,155 INFO L87 Difference]: Start difference. First operand 11409 states and 17315 transitions. Second operand 3 states. [2020-07-21 23:50:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:55,942 INFO L93 Difference]: Finished difference Result 33422 states and 50694 transitions. [2020-07-21 23:50:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:50:55,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-07-21 23:50:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:55,977 INFO L225 Difference]: With dead ends: 33422 [2020-07-21 23:50:55,977 INFO L226 Difference]: Without dead ends: 22442 [2020-07-21 23:50:56,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22442 states. [2020-07-21 23:50:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22442 to 11510. [2020-07-21 23:50:56,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11510 states. [2020-07-21 23:50:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 17430 transitions. [2020-07-21 23:50:56,673 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 17430 transitions. Word has length 331 [2020-07-21 23:50:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:56,673 INFO L479 AbstractCegarLoop]: Abstraction has 11510 states and 17430 transitions. [2020-07-21 23:50:56,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:50:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 17430 transitions. [2020-07-21 23:50:56,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 23:50:56,686 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:56,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:56,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:56,894 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:56,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1960266097, now seen corresponding path program 1 times [2020-07-21 23:50:56,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:56,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016537148] [2020-07-21 23:50:56,897 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 [2020-07-21 23:50:57,276 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:50:57,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:57,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:50:57,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:57,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:57,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016537148] [2020-07-21 23:50:57,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:57,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:50:57,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454127163] [2020-07-21 23:50:57,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:50:57,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:57,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:50:57,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:50:57,372 INFO L87 Difference]: Start difference. First operand 11510 states and 17430 transitions. Second operand 4 states. [2020-07-21 23:50:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:58,297 INFO L93 Difference]: Finished difference Result 24943 states and 37622 transitions. [2020-07-21 23:50:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:50:58,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-21 23:50:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:58,321 INFO L225 Difference]: With dead ends: 24943 [2020-07-21 23:50:58,321 INFO L226 Difference]: Without dead ends: 13139 [2020-07-21 23:50:58,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:50:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13139 states. [2020-07-21 23:50:59,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13139 to 13019. [2020-07-21 23:50:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13019 states. [2020-07-21 23:50:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13019 states to 13019 states and 19557 transitions. [2020-07-21 23:50:59,056 INFO L78 Accepts]: Start accepts. Automaton has 13019 states and 19557 transitions. Word has length 332 [2020-07-21 23:50:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:59,057 INFO L479 AbstractCegarLoop]: Abstraction has 13019 states and 19557 transitions. [2020-07-21 23:50:59,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:50:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 13019 states and 19557 transitions. [2020-07-21 23:50:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 23:50:59,070 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:59,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:59,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:59,271 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:59,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1357216552, now seen corresponding path program 1 times [2020-07-21 23:50:59,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:59,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192552121] [2020-07-21 23:50:59,274 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 [2020-07-21 23:50:59,548 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:50:59,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:59,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:50:59,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:59,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:50:59,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192552121] [2020-07-21 23:50:59,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:50:59,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:50:59,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500582322] [2020-07-21 23:50:59,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:50:59,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:59,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:50:59,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:50:59,612 INFO L87 Difference]: Start difference. First operand 13019 states and 19557 transitions. Second operand 3 states. [2020-07-21 23:51:00,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:51:00,412 INFO L93 Difference]: Finished difference Result 35989 states and 53849 transitions. [2020-07-21 23:51:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:51:00,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-21 23:51:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:51:00,445 INFO L225 Difference]: With dead ends: 35989 [2020-07-21 23:51:00,446 INFO L226 Difference]: Without dead ends: 23370 [2020-07-21 23:51:00,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:51:00,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23370 states. [2020-07-21 23:51:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23370 to 12589. [2020-07-21 23:51:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12589 states. [2020-07-21 23:51:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12589 states to 12589 states and 18879 transitions. [2020-07-21 23:51:01,214 INFO L78 Accepts]: Start accepts. Automaton has 12589 states and 18879 transitions. Word has length 332 [2020-07-21 23:51:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:51:01,214 INFO L479 AbstractCegarLoop]: Abstraction has 12589 states and 18879 transitions. [2020-07-21 23:51:01,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:51:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 12589 states and 18879 transitions. [2020-07-21 23:51:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 23:51:01,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:51:01,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:51:01,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:51:01,424 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:51:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:51:01,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1404232685, now seen corresponding path program 1 times [2020-07-21 23:51:01,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:51:01,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512880356] [2020-07-21 23:51:01,426 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 [2020-07-21 23:51:01,708 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:51:01,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:51:01,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:51:01,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:51:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:51:01,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:51:01,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512880356] [2020-07-21 23:51:01,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:51:01,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:51:01,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566001787] [2020-07-21 23:51:01,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:51:01,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:51:01,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:51:01,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:51:01,770 INFO L87 Difference]: Start difference. First operand 12589 states and 18879 transitions. Second operand 4 states. [2020-07-21 23:51:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:51:03,192 INFO L93 Difference]: Finished difference Result 35413 states and 52850 transitions. [2020-07-21 23:51:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:51:03,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-21 23:51:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:51:03,214 INFO L225 Difference]: With dead ends: 35413 [2020-07-21 23:51:03,214 INFO L226 Difference]: Without dead ends: 24312 [2020-07-21 23:51:03,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:51:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24312 states. [2020-07-21 23:51:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24312 to 13696. [2020-07-21 23:51:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13696 states. [2020-07-21 23:51:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13696 states to 13696 states and 20588 transitions. [2020-07-21 23:51:03,833 INFO L78 Accepts]: Start accepts. Automaton has 13696 states and 20588 transitions. Word has length 332 [2020-07-21 23:51:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:51:03,833 INFO L479 AbstractCegarLoop]: Abstraction has 13696 states and 20588 transitions. [2020-07-21 23:51:03,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:51:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13696 states and 20588 transitions. [2020-07-21 23:51:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 23:51:03,843 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:51:03,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:51:04,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:51:04,049 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:51:04,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:51:04,050 INFO L82 PathProgramCache]: Analyzing trace with hash -46203161, now seen corresponding path program 1 times [2020-07-21 23:51:04,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:51:04,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641832328] [2020-07-21 23:51:04,051 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 [2020-07-21 23:51:04,365 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:51:04,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:51:04,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:51:04,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:51:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:51:04,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:51:04,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641832328] [2020-07-21 23:51:04,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:51:04,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:51:04,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865862295] [2020-07-21 23:51:04,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:51:04,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:51:04,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:51:04,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:51:04,428 INFO L87 Difference]: Start difference. First operand 13696 states and 20588 transitions. Second operand 3 states. [2020-07-21 23:51:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:51:05,419 INFO L93 Difference]: Finished difference Result 26778 states and 40397 transitions. [2020-07-21 23:51:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:51:05,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-21 23:51:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:51:05,443 INFO L225 Difference]: With dead ends: 26778 [2020-07-21 23:51:05,443 INFO L226 Difference]: Without dead ends: 18348 [2020-07-21 23:51:05,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:51:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18348 states. [2020-07-21 23:51:06,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18348 to 16256. [2020-07-21 23:51:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16256 states. [2020-07-21 23:51:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16256 states to 16256 states and 24616 transitions. [2020-07-21 23:51:06,166 INFO L78 Accepts]: Start accepts. Automaton has 16256 states and 24616 transitions. Word has length 332 [2020-07-21 23:51:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:51:06,167 INFO L479 AbstractCegarLoop]: Abstraction has 16256 states and 24616 transitions. [2020-07-21 23:51:06,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:51:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 16256 states and 24616 transitions. [2020-07-21 23:51:06,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 23:51:06,176 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:51:06,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:51:06,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:51:06,378 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:51:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:51:06,378 INFO L82 PathProgramCache]: Analyzing trace with hash 451176202, now seen corresponding path program 1 times [2020-07-21 23:51:06,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:51:06,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546788692] [2020-07-21 23:51:06,380 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 [2020-07-21 23:51:06,698 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:51:06,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:51:06,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:51:06,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:51:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:51:06,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:51:06,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546788692] [2020-07-21 23:51:06,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:51:06,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:51:06,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519174431] [2020-07-21 23:51:06,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:51:06,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:51:06,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:51:06,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:51:06,803 INFO L87 Difference]: Start difference. First operand 16256 states and 24616 transitions. Second operand 3 states. [2020-07-21 23:51:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:51:08,253 INFO L93 Difference]: Finished difference Result 44070 states and 66368 transitions. [2020-07-21 23:51:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:51:08,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-21 23:51:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:51:08,287 INFO L225 Difference]: With dead ends: 44070 [2020-07-21 23:51:08,287 INFO L226 Difference]: Without dead ends: 30336 [2020-07-21 23:51:08,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:51:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30336 states. [2020-07-21 23:51:09,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30336 to 30243. [2020-07-21 23:51:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30243 states. [2020-07-21 23:51:09,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30243 states to 30243 states and 45427 transitions. [2020-07-21 23:51:09,923 INFO L78 Accepts]: Start accepts. Automaton has 30243 states and 45427 transitions. Word has length 332 [2020-07-21 23:51:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:51:09,923 INFO L479 AbstractCegarLoop]: Abstraction has 30243 states and 45427 transitions. [2020-07-21 23:51:09,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:51:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 30243 states and 45427 transitions. [2020-07-21 23:51:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 23:51:09,946 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:51:09,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:51:10,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:51:10,154 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:51:10,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:51:10,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1598768437, now seen corresponding path program 1 times [2020-07-21 23:51:10,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:51:10,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362442652] [2020-07-21 23:51:10,156 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 [2020-07-21 23:51:10,468 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:51:10,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:51:10,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:51:10,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:51:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:51:10,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:51:10,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362442652] [2020-07-21 23:51:10,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:51:10,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:51:10,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284535885] [2020-07-21 23:51:10,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:51:10,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:51:10,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:51:10,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:51:10,583 INFO L87 Difference]: Start difference. First operand 30243 states and 45427 transitions. Second operand 4 states. [2020-07-21 23:51:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:51:14,066 INFO L93 Difference]: Finished difference Result 87193 states and 130723 transitions. [2020-07-21 23:51:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:51:14,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-21 23:51:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:51:14,126 INFO L225 Difference]: With dead ends: 87193 [2020-07-21 23:51:14,126 INFO L226 Difference]: Without dead ends: 57496 [2020-07-21 23:51:14,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:51:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57496 states. [2020-07-21 23:51:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57496 to 57422. [2020-07-21 23:51:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57422 states. [2020-07-21 23:51:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57422 states to 57422 states and 85556 transitions. [2020-07-21 23:51:17,087 INFO L78 Accepts]: Start accepts. Automaton has 57422 states and 85556 transitions. Word has length 333 [2020-07-21 23:51:17,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:51:17,087 INFO L479 AbstractCegarLoop]: Abstraction has 57422 states and 85556 transitions. [2020-07-21 23:51:17,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:51:17,087 INFO L276 IsEmpty]: Start isEmpty. Operand 57422 states and 85556 transitions. [2020-07-21 23:51:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-21 23:51:17,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:51:17,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:51:17,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:51:17,582 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:51:17,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:51:17,583 INFO L82 PathProgramCache]: Analyzing trace with hash 753269732, now seen corresponding path program 1 times [2020-07-21 23:51:17,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:51:17,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728193947] [2020-07-21 23:51:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:51:17,862 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:51:17,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:51:17,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:51:17,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:51:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:51:17,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:51:17,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728193947] [2020-07-21 23:51:17,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:51:17,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:51:17,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025795011] [2020-07-21 23:51:17,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:51:17,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:51:17,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:51:17,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:51:17,930 INFO L87 Difference]: Start difference. First operand 57422 states and 85556 transitions. Second operand 3 states. [2020-07-21 23:51:24,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:51:24,368 INFO L93 Difference]: Finished difference Result 160787 states and 238586 transitions. [2020-07-21 23:51:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:51:24,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-07-21 23:51:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:51:24,483 INFO L225 Difference]: With dead ends: 160787 [2020-07-21 23:51:24,483 INFO L226 Difference]: Without dead ends: 108745 [2020-07-21 23:51:24,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:51:24,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108745 states. [2020-07-21 23:51:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108745 to 58125. [2020-07-21 23:51:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58125 states. [2020-07-21 23:51:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58125 states to 58125 states and 86323 transitions. [2020-07-21 23:51:27,891 INFO L78 Accepts]: Start accepts. Automaton has 58125 states and 86323 transitions. Word has length 334 [2020-07-21 23:51:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:51:27,892 INFO L479 AbstractCegarLoop]: Abstraction has 58125 states and 86323 transitions. [2020-07-21 23:51:27,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:51:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 58125 states and 86323 transitions. [2020-07-21 23:51:27,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 23:51:27,923 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:51:27,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:51:28,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:51:28,126 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:51:28,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:51:28,127 INFO L82 PathProgramCache]: Analyzing trace with hash 936914109, now seen corresponding path program 1 times [2020-07-21 23:51:28,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:51:28,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528472903] [2020-07-21 23:51:28,128 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 [2020-07-21 23:51:28,460 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:51:28,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:51:28,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:51:28,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:51:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:51:28,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:51:28,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528472903] [2020-07-21 23:51:28,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:51:28,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:51:28,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153260633] [2020-07-21 23:51:28,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:51:28,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:51:28,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:51:28,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:51:28,543 INFO L87 Difference]: Start difference. First operand 58125 states and 86323 transitions. Second operand 3 states. [2020-07-21 23:51:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:51:35,311 INFO L93 Difference]: Finished difference Result 165353 states and 244905 transitions. [2020-07-21 23:51:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:51:35,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-21 23:51:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:51:35,437 INFO L225 Difference]: With dead ends: 165353 [2020-07-21 23:51:35,437 INFO L226 Difference]: Without dead ends: 112554 [2020-07-21 23:51:35,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:51:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112554 states. [2020-07-21 23:51:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112554 to 112467. [2020-07-21 23:51:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112467 states. [2020-07-21 23:51:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112467 states to 112467 states and 165615 transitions. [2020-07-21 23:51:41,730 INFO L78 Accepts]: Start accepts. Automaton has 112467 states and 165615 transitions. Word has length 335 [2020-07-21 23:51:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:51:41,730 INFO L479 AbstractCegarLoop]: Abstraction has 112467 states and 165615 transitions. [2020-07-21 23:51:41,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:51:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 112467 states and 165615 transitions. [2020-07-21 23:51:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 23:51:41,789 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:51:41,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:51:41,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:51:41,990 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:51:41,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:51:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1561727870, now seen corresponding path program 1 times [2020-07-21 23:51:41,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:51:41,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117803447] [2020-07-21 23:51:41,992 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:51:42,264 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:51:42,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:51:42,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:51:42,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:51:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:51:44,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:51:44,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117803447] [2020-07-21 23:51:44,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:51:44,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:51:44,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415809104] [2020-07-21 23:51:44,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:51:44,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:51:44,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:51:44,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:51:44,077 INFO L87 Difference]: Start difference. First operand 112467 states and 165615 transitions. Second operand 4 states. [2020-07-21 23:51:55,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:51:55,397 INFO L93 Difference]: Finished difference Result 310363 states and 456286 transitions. [2020-07-21 23:51:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:51:55,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-21 23:51:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:51:55,647 INFO L225 Difference]: With dead ends: 310363 [2020-07-21 23:51:55,647 INFO L226 Difference]: Without dead ends: 208217 [2020-07-21 23:51:55,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:51:55,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208217 states. [2020-07-21 23:52:06,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208217 to 116522. [2020-07-21 23:52:06,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116522 states. [2020-07-21 23:52:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116522 states to 116522 states and 171930 transitions. [2020-07-21 23:52:06,303 INFO L78 Accepts]: Start accepts. Automaton has 116522 states and 171930 transitions. Word has length 336 [2020-07-21 23:52:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:52:06,303 INFO L479 AbstractCegarLoop]: Abstraction has 116522 states and 171930 transitions. [2020-07-21 23:52:06,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:52:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 116522 states and 171930 transitions. [2020-07-21 23:52:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 23:52:06,364 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:52:06,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:52:06,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:52:06,565 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:52:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:52:06,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1295780269, now seen corresponding path program 1 times [2020-07-21 23:52:06,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:52:06,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858681754] [2020-07-21 23:52:06,566 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 [2020-07-21 23:52:07,043 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:52:07,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:52:07,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:52:07,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:52:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:52:07,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:52:07,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858681754] [2020-07-21 23:52:07,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:52:07,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:52:07,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022714947] [2020-07-21 23:52:07,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:52:07,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:52:07,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:52:07,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:52:07,109 INFO L87 Difference]: Start difference. First operand 116522 states and 171930 transitions. Second operand 4 states. [2020-07-21 23:52:14,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:52:14,137 INFO L93 Difference]: Finished difference Result 216396 states and 318498 transitions. [2020-07-21 23:52:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:52:14,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-21 23:52:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:52:14,276 INFO L225 Difference]: With dead ends: 216396 [2020-07-21 23:52:14,277 INFO L226 Difference]: Without dead ends: 110662 [2020-07-21 23:52:14,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:52:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110662 states. [2020-07-21 23:52:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110662 to 110262. [2020-07-21 23:52:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110262 states. [2020-07-21 23:52:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110262 states to 110262 states and 162647 transitions. [2020-07-21 23:52:23,511 INFO L78 Accepts]: Start accepts. Automaton has 110262 states and 162647 transitions. Word has length 336 [2020-07-21 23:52:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:52:23,511 INFO L479 AbstractCegarLoop]: Abstraction has 110262 states and 162647 transitions. [2020-07-21 23:52:23,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:52:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 110262 states and 162647 transitions. [2020-07-21 23:52:23,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-21 23:52:23,567 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:52:23,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:52:23,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:52:23,769 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:52:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:52:23,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1576957566, now seen corresponding path program 1 times [2020-07-21 23:52:23,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:52:23,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918914290] [2020-07-21 23:52:23,771 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 [2020-07-21 23:52:24,044 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:52:24,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:52:24,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:52:24,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:52:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:52:24,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:52:24,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918914290] [2020-07-21 23:52:24,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:52:24,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:52:24,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842302883] [2020-07-21 23:52:24,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:52:24,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:52:24,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:52:24,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:52:24,120 INFO L87 Difference]: Start difference. First operand 110262 states and 162647 transitions. Second operand 4 states. [2020-07-21 23:52:32,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:52:32,189 INFO L93 Difference]: Finished difference Result 234329 states and 344596 transitions. [2020-07-21 23:52:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:52:32,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-21 23:52:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:52:32,329 INFO L225 Difference]: With dead ends: 234329 [2020-07-21 23:52:32,329 INFO L226 Difference]: Without dead ends: 118544 [2020-07-21 23:52:32,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:52:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118544 states. [2020-07-21 23:52:42,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118544 to 118282. [2020-07-21 23:52:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118282 states. [2020-07-21 23:52:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118282 states to 118282 states and 173093 transitions. [2020-07-21 23:52:42,348 INFO L78 Accepts]: Start accepts. Automaton has 118282 states and 173093 transitions. Word has length 337 [2020-07-21 23:52:42,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:52:42,349 INFO L479 AbstractCegarLoop]: Abstraction has 118282 states and 173093 transitions. [2020-07-21 23:52:42,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:52:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 118282 states and 173093 transitions. [2020-07-21 23:52:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-21 23:52:42,416 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:52:42,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:52:42,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:52:42,631 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:52:42,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:52:42,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2102120971, now seen corresponding path program 1 times [2020-07-21 23:52:42,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:52:42,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958317494] [2020-07-21 23:52:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:52:42,931 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:52:42,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:52:42,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:52:42,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:52:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:52:43,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:52:43,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958317494] [2020-07-21 23:52:43,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:52:43,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:52:43,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415787749] [2020-07-21 23:52:43,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:52:43,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:52:43,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:52:43,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:52:43,026 INFO L87 Difference]: Start difference. First operand 118282 states and 173093 transitions. Second operand 3 states. [2020-07-21 23:52:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:52:59,564 INFO L93 Difference]: Finished difference Result 319723 states and 465272 transitions. [2020-07-21 23:52:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:52:59,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-21 23:52:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:52:59,842 INFO L225 Difference]: With dead ends: 319723 [2020-07-21 23:52:59,842 INFO L226 Difference]: Without dead ends: 220647 [2020-07-21 23:52:59,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:00,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220647 states. [2020-07-21 23:53:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220647 to 219834. [2020-07-21 23:53:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219834 states. [2020-07-21 23:53:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219834 states to 219834 states and 319666 transitions. [2020-07-21 23:53:18,071 INFO L78 Accepts]: Start accepts. Automaton has 219834 states and 319666 transitions. Word has length 338 [2020-07-21 23:53:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:18,071 INFO L479 AbstractCegarLoop]: Abstraction has 219834 states and 319666 transitions. [2020-07-21 23:53:18,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 219834 states and 319666 transitions. [2020-07-21 23:53:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 23:53:18,195 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:18,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:18,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:18,396 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:18,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1988932227, now seen corresponding path program 1 times [2020-07-21 23:53:18,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:18,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272341925] [2020-07-21 23:53:18,398 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:18,670 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:18,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:18,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:18,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:18,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:18,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272341925] [2020-07-21 23:53:18,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:18,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:18,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393606989] [2020-07-21 23:53:18,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:18,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:18,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:18,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:18,728 INFO L87 Difference]: Start difference. First operand 219834 states and 319666 transitions. Second operand 3 states. [2020-07-21 23:53:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:37,828 INFO L93 Difference]: Finished difference Result 366159 states and 532020 transitions. [2020-07-21 23:53:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:37,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-07-21 23:53:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:38,196 INFO L225 Difference]: With dead ends: 366159 [2020-07-21 23:53:38,196 INFO L226 Difference]: Without dead ends: 290011 [2020-07-21 23:53:38,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290011 states. [2020-07-21 23:53:57,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290011 to 219834. [2020-07-21 23:53:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219834 states. [2020-07-21 23:53:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219834 states to 219834 states and 319625 transitions. [2020-07-21 23:53:58,167 INFO L78 Accepts]: Start accepts. Automaton has 219834 states and 319625 transitions. Word has length 340 [2020-07-21 23:53:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:58,168 INFO L479 AbstractCegarLoop]: Abstraction has 219834 states and 319625 transitions. [2020-07-21 23:53:58,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 219834 states and 319625 transitions. [2020-07-21 23:53:58,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 23:53:58,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:58,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:58,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:58,504 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:58,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1228349374, now seen corresponding path program 1 times [2020-07-21 23:53:58,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:58,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069335385] [2020-07-21 23:53:58,506 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:58,786 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:58,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:58,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:58,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:58,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:58,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069335385] [2020-07-21 23:53:58,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:58,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:58,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111704375] [2020-07-21 23:53:58,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:58,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:58,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:58,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:58,843 INFO L87 Difference]: Start difference. First operand 219834 states and 319625 transitions. Second operand 3 states. [2020-07-21 23:54:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:54:26,832 INFO L93 Difference]: Finished difference Result 561168 states and 814364 transitions. [2020-07-21 23:54:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:54:26,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-07-21 23:54:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:54:27,304 INFO L225 Difference]: With dead ends: 561168 [2020-07-21 23:54:27,304 INFO L226 Difference]: Without dead ends: 357273 [2020-07-21 23:54:27,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:54:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357273 states. [2020-07-21 23:54:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357273 to 220400. [2020-07-21 23:54:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220400 states. [2020-07-21 23:54:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220400 states to 220400 states and 319838 transitions. [2020-07-21 23:54:50,107 INFO L78 Accepts]: Start accepts. Automaton has 220400 states and 319838 transitions. Word has length 340 [2020-07-21 23:54:50,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:54:50,107 INFO L479 AbstractCegarLoop]: Abstraction has 220400 states and 319838 transitions. [2020-07-21 23:54:50,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:54:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 220400 states and 319838 transitions. [2020-07-21 23:54:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-21 23:54:50,242 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:54:50,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:54:50,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:50,443 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:54:50,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:54:50,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1214280482, now seen corresponding path program 1 times [2020-07-21 23:54:50,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:54:50,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834197606] [2020-07-21 23:54:50,445 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:50,757 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:54:50,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:54:50,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:54:50,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:54:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:54:50,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:54:50,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834197606] [2020-07-21 23:54:50,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:54:50,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:54:50,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905665635] [2020-07-21 23:54:50,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:54:50,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:54:50,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:54:50,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:54:50,853 INFO L87 Difference]: Start difference. First operand 220400 states and 319838 transitions. Second operand 3 states. [2020-07-21 23:55:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:55:20,524 INFO L93 Difference]: Finished difference Result 606739 states and 879237 transitions. [2020-07-21 23:55:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:55:20,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2020-07-21 23:55:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:55:21,054 INFO L225 Difference]: With dead ends: 606739 [2020-07-21 23:55:21,054 INFO L226 Difference]: Without dead ends: 416911 [2020-07-21 23:55:21,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:55:21,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416911 states. [2020-07-21 23:56:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416911 to 416853. [2020-07-21 23:56:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416853 states. [2020-07-21 23:56:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416853 states to 416853 states and 600505 transitions. [2020-07-21 23:56:03,333 INFO L78 Accepts]: Start accepts. Automaton has 416853 states and 600505 transitions. Word has length 341 [2020-07-21 23:56:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:56:03,334 INFO L479 AbstractCegarLoop]: Abstraction has 416853 states and 600505 transitions. [2020-07-21 23:56:03,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:56:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 416853 states and 600505 transitions. [2020-07-21 23:56:03,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-21 23:56:03,616 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:56:03,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:56:03,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:56:03,817 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:56:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:56:03,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2041433819, now seen corresponding path program 1 times [2020-07-21 23:56:03,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:56:03,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945723237] [2020-07-21 23:56:03,819 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:56:04,137 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:56:04,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:56:04,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:56:04,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:56:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:56:04,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:56:04,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945723237] [2020-07-21 23:56:04,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:56:04,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:56:04,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521594758] [2020-07-21 23:56:04,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:56:04,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:56:04,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:56:04,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:56:04,200 INFO L87 Difference]: Start difference. First operand 416853 states and 600505 transitions. Second operand 3 states. [2020-07-21 23:57:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:57:06,034 INFO L93 Difference]: Finished difference Result 1051135 states and 1521509 transitions. [2020-07-21 23:57:06,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:57:06,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 342 [2020-07-21 23:57:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:57:07,072 INFO L225 Difference]: With dead ends: 1051135 [2020-07-21 23:57:07,073 INFO L226 Difference]: Without dead ends: 738549 [2020-07-21 23:57:07,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:57:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738549 states. [2020-07-21 23:58:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738549 to 737895. [2020-07-21 23:58:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737895 states. [2020-07-21 23:58:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737895 states to 737895 states and 1061423 transitions. [2020-07-21 23:58:26,130 INFO L78 Accepts]: Start accepts. Automaton has 737895 states and 1061423 transitions. Word has length 342 [2020-07-21 23:58:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:58:26,131 INFO L479 AbstractCegarLoop]: Abstraction has 737895 states and 1061423 transitions. [2020-07-21 23:58:26,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:58:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 737895 states and 1061423 transitions. [2020-07-21 23:58:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-21 23:58:26,534 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:58:26,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:58:26,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:58:26,741 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:58:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:58:26,742 INFO L82 PathProgramCache]: Analyzing trace with hash -419830058, now seen corresponding path program 1 times [2020-07-21 23:58:26,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:58:26,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302956321] [2020-07-21 23:58:26,743 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:58:27,063 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:58:27,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:58:27,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:58:27,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:58:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:58:27,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:58:27,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302956321] [2020-07-21 23:58:27,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:58:27,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:58:27,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105000347] [2020-07-21 23:58:27,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:58:27,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:58:27,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:58:27,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:58:27,161 INFO L87 Difference]: Start difference. First operand 737895 states and 1061423 transitions. Second operand 4 states. [2020-07-21 23:59:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:59:45,633 INFO L93 Difference]: Finished difference Result 1533409 states and 2201068 transitions. [2020-07-21 23:59:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:59:45,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 342 [2020-07-21 23:59:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:59:47,699 INFO L225 Difference]: With dead ends: 1533409 [2020-07-21 23:59:47,700 INFO L226 Difference]: Without dead ends: 797578 [2020-07-21 23:59:48,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:59:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797578 states. [2020-07-22 00:01:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797578 to 742933. [2020-07-22 00:01:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742933 states. [2020-07-22 00:01:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742933 states to 742933 states and 1068967 transitions. [2020-07-22 00:01:05,108 INFO L78 Accepts]: Start accepts. Automaton has 742933 states and 1068967 transitions. Word has length 342 [2020-07-22 00:01:05,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 00:01:05,108 INFO L479 AbstractCegarLoop]: Abstraction has 742933 states and 1068967 transitions. [2020-07-22 00:01:05,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-22 00:01:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 742933 states and 1068967 transitions. [2020-07-22 00:01:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-07-22 00:01:05,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 00:01:05,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-22 00:01:05,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 00:01:05,713 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 00:01:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 00:01:05,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1541774182, now seen corresponding path program 1 times [2020-07-22 00:01:05,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 00:01:05,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726491826] [2020-07-22 00:01:05,715 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 00:01:05,994 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 00:01:05,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 00:01:05,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-22 00:01:06,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 00:01:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 00:01:06,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-22 00:01:06,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726491826] [2020-07-22 00:01:06,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-22 00:01:06,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-22 00:01:06,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857562816] [2020-07-22 00:01:06,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-22 00:01:06,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 00:01:06,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-22 00:01:06,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-22 00:01:06,068 INFO L87 Difference]: Start difference. First operand 742933 states and 1068967 transitions. Second operand 3 states.