/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:47:40,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:47:40,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:47:40,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:47:40,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:47:40,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:47:40,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:47:40,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:47:40,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:47:40,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:47:40,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:47:40,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:47:40,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:47:40,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:47:40,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:47:40,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:47:40,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:47:40,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:47:40,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:47:40,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:47:40,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:47:40,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:47:40,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:47:40,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:47:40,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 14:47:40,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 14:47:40,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 14:47:40,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 14:47:40,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 14:47:40,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 14:47:40,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 14:47:40,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 14:47:40,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 14:47:40,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 14:47:40,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 14:47:40,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 14:47:40,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 14:47:40,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 14:47:40,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:47:40,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:47:40,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:47:40,185 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 14:47:40,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:47:40,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:47:40,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:47:40,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:47:40,202 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:47:40,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:47:40,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:47:40,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:47:40,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:47:40,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:47:40,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:47:40,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:47:40,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:47:40,204 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:47:40,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:47:40,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:47:40,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:47:40,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:47:40,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:47:40,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:47:40,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:47:40,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:47:40,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:47:40,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:47:40,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:47:40,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:47:40,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:40,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:47:40,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:47:40,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 14:47:40,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:47:40,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:47:40,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:47:40,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:47:40,523 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:47:40,523 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 14:47:40,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a579e6e3b/98e29b53161843159f6a81cf877c1ee0/FLAGfd8ef764b [2020-07-21 14:47:41,272 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:47:41,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 14:47:41,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a579e6e3b/98e29b53161843159f6a81cf877c1ee0/FLAGfd8ef764b [2020-07-21 14:47:41,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a579e6e3b/98e29b53161843159f6a81cf877c1ee0 [2020-07-21 14:47:41,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:47:41,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:47:41,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:47:41,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:47:41,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:47:41,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:47:41" (1/1) ... [2020-07-21 14:47:41,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da7f1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:41, skipping insertion in model container [2020-07-21 14:47:41,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:47:41" (1/1) ... [2020-07-21 14:47:41,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:47:41,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:47:43,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:47:43,218 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:47:44,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:47:44,134 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:47:44,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44 WrapperNode [2020-07-21 14:47:44,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:47:44,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:47:44,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:47:44,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:47:44,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44" (1/1) ... [2020-07-21 14:47:44,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44" (1/1) ... [2020-07-21 14:47:44,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44" (1/1) ... [2020-07-21 14:47:44,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44" (1/1) ... [2020-07-21 14:47:44,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44" (1/1) ... [2020-07-21 14:47:44,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44" (1/1) ... [2020-07-21 14:47:44,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44" (1/1) ... [2020-07-21 14:47:44,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:47:44,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:47:44,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:47:44,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:47:44,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44" (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 14:47:44,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:47:44,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:47:44,459 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:47:44,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:47:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:47:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 14:47:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-21 14:47:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 14:47:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-21 14:47:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:47:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:47:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-21 14:47:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-21 14:47:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-21 14:47:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-21 14:47:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-21 14:47:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-21 14:47:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-21 14:47:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 14:47:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:47:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:47:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:47:47,636 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:47:47,636 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 14:47:47,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:47:47 BoogieIcfgContainer [2020-07-21 14:47:47,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:47:47,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:47:47,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:47:47,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:47:47,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:47:41" (1/3) ... [2020-07-21 14:47:47,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f87552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:47:47, skipping insertion in model container [2020-07-21 14:47:47,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:47:44" (2/3) ... [2020-07-21 14:47:47,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f87552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:47:47, skipping insertion in model container [2020-07-21 14:47:47,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:47:47" (3/3) ... [2020-07-21 14:47:47,659 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 14:47:47,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:47:47,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-21 14:47:47,695 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-21 14:47:47,727 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:47:47,727 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:47:47,727 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:47:47,728 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:47:47,728 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:47:47,728 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:47:47,728 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:47:47,728 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:47:47,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2020-07-21 14:47:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 14:47:47,820 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:47,822 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 14:47:47,823 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 14:47:47,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:47,830 INFO L82 PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times [2020-07-21 14:47:47,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:47,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182812256] [2020-07-21 14:47:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:48,312 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:48,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:48,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:47:48,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:48,641 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 14:47:48,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:48,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182812256] [2020-07-21 14:47:48,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:48,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:47:48,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099020534] [2020-07-21 14:47:48,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:47:48,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:48,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:47:48,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:47:48,675 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 4 states. [2020-07-21 14:47:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:49,141 INFO L93 Difference]: Finished difference Result 3004 states and 5384 transitions. [2020-07-21 14:47:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:47:49,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-21 14:47:49,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:49,173 INFO L225 Difference]: With dead ends: 3004 [2020-07-21 14:47:49,173 INFO L226 Difference]: Without dead ends: 1996 [2020-07-21 14:47:49,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 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 14:47:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2020-07-21 14:47:49,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1897. [2020-07-21 14:47:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1897 states. [2020-07-21 14:47:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2882 transitions. [2020-07-21 14:47:49,342 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2882 transitions. Word has length 327 [2020-07-21 14:47:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:49,344 INFO L479 AbstractCegarLoop]: Abstraction has 1897 states and 2882 transitions. [2020-07-21 14:47:49,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:47:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2882 transitions. [2020-07-21 14:47:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-21 14:47:49,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:49,355 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] [2020-07-21 14:47:49,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:49,572 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 14:47:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:49,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1200420922, now seen corresponding path program 1 times [2020-07-21 14:47:49,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:49,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604296658] [2020-07-21 14:47:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:49,871 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:49,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:49,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:47:49,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:50,088 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 14:47:50,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:50,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604296658] [2020-07-21 14:47:50,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:50,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:47:50,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114271782] [2020-07-21 14:47:50,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:47:50,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:50,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:47:50,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:47:50,094 INFO L87 Difference]: Start difference. First operand 1897 states and 2882 transitions. Second operand 3 states. [2020-07-21 14:47:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:50,342 INFO L93 Difference]: Finished difference Result 5457 states and 8241 transitions. [2020-07-21 14:47:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:47:50,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-21 14:47:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:50,364 INFO L225 Difference]: With dead ends: 5457 [2020-07-21 14:47:50,364 INFO L226 Difference]: Without dead ends: 3687 [2020-07-21 14:47:50,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 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 14:47:50,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2020-07-21 14:47:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3585. [2020-07-21 14:47:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3585 states. [2020-07-21 14:47:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 5432 transitions. [2020-07-21 14:47:50,512 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 5432 transitions. Word has length 329 [2020-07-21 14:47:50,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:50,513 INFO L479 AbstractCegarLoop]: Abstraction has 3585 states and 5432 transitions. [2020-07-21 14:47:50,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:47:50,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 5432 transitions. [2020-07-21 14:47:50,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-21 14:47:50,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:50,527 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] [2020-07-21 14:47:50,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:50,740 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 14:47:50,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:50,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1599917461, now seen corresponding path program 1 times [2020-07-21 14:47:50,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:50,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536295355] [2020-07-21 14:47:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:51,010 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:51,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:51,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:47:51,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:51,138 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 14:47:51,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:51,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536295355] [2020-07-21 14:47:51,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:51,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:47:51,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760811670] [2020-07-21 14:47:51,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:47:51,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:51,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:47:51,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:47:51,144 INFO L87 Difference]: Start difference. First operand 3585 states and 5432 transitions. Second operand 3 states. [2020-07-21 14:47:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:51,412 INFO L93 Difference]: Finished difference Result 10573 states and 15979 transitions. [2020-07-21 14:47:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:47:51,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-21 14:47:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:51,450 INFO L225 Difference]: With dead ends: 10573 [2020-07-21 14:47:51,451 INFO L226 Difference]: Without dead ends: 7082 [2020-07-21 14:47:51,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 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 14:47:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7082 states. [2020-07-21 14:47:51,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7082 to 3598. [2020-07-21 14:47:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3598 states. [2020-07-21 14:47:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5448 transitions. [2020-07-21 14:47:51,701 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5448 transitions. Word has length 329 [2020-07-21 14:47:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:51,702 INFO L479 AbstractCegarLoop]: Abstraction has 3598 states and 5448 transitions. [2020-07-21 14:47:51,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:47:51,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5448 transitions. [2020-07-21 14:47:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 14:47:51,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:51,715 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 14:47:51,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:51,929 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 14:47:51,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:51,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1347551884, now seen corresponding path program 1 times [2020-07-21 14:47:51,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:51,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138362696] [2020-07-21 14:47:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:52,185 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:52,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:52,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:47:52,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:52,354 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 14:47:52,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:52,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138362696] [2020-07-21 14:47:52,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:52,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:47:52,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344001223] [2020-07-21 14:47:52,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:47:52,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:52,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:47:52,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:47:52,357 INFO L87 Difference]: Start difference. First operand 3598 states and 5448 transitions. Second operand 3 states. [2020-07-21 14:47:52,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:52,661 INFO L93 Difference]: Finished difference Result 10598 states and 16012 transitions. [2020-07-21 14:47:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:47:52,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 14:47:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:52,700 INFO L225 Difference]: With dead ends: 10598 [2020-07-21 14:47:52,700 INFO L226 Difference]: Without dead ends: 7065 [2020-07-21 14:47:52,717 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 14:47:52,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7065 states. [2020-07-21 14:47:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7065 to 3614. [2020-07-21 14:47:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3614 states. [2020-07-21 14:47:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5468 transitions. [2020-07-21 14:47:52,924 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5468 transitions. Word has length 330 [2020-07-21 14:47:52,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:52,924 INFO L479 AbstractCegarLoop]: Abstraction has 3614 states and 5468 transitions. [2020-07-21 14:47:52,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:47:52,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5468 transitions. [2020-07-21 14:47:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 14:47:52,937 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:52,937 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 14:47:53,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:53,151 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 14:47:53,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:53,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1214272767, now seen corresponding path program 1 times [2020-07-21 14:47:53,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:53,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081418273] [2020-07-21 14:47:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:53,433 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:53,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:53,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:47:53,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:53,622 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 14:47:53,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:53,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081418273] [2020-07-21 14:47:53,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:53,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:47:53,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554382816] [2020-07-21 14:47:53,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:47:53,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:53,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:47:53,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:47:53,625 INFO L87 Difference]: Start difference. First operand 3614 states and 5468 transitions. Second operand 4 states. [2020-07-21 14:47:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:54,012 INFO L93 Difference]: Finished difference Result 10699 states and 16169 transitions. [2020-07-21 14:47:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:47:54,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-07-21 14:47:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:54,047 INFO L225 Difference]: With dead ends: 10699 [2020-07-21 14:47:54,047 INFO L226 Difference]: Without dead ends: 7104 [2020-07-21 14:47:54,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 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 14:47:54,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7104 states. [2020-07-21 14:47:54,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7104 to 6988. [2020-07-21 14:47:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6988 states. [2020-07-21 14:47:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6988 states to 6988 states and 10535 transitions. [2020-07-21 14:47:54,360 INFO L78 Accepts]: Start accepts. Automaton has 6988 states and 10535 transitions. Word has length 331 [2020-07-21 14:47:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:54,360 INFO L479 AbstractCegarLoop]: Abstraction has 6988 states and 10535 transitions. [2020-07-21 14:47:54,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:47:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6988 states and 10535 transitions. [2020-07-21 14:47:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 14:47:54,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:54,380 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 14:47:54,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:54,596 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 14:47:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:54,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1524568423, now seen corresponding path program 1 times [2020-07-21 14:47:54,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:54,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228162824] [2020-07-21 14:47:54,598 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:54,864 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:54,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:54,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:47:54,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:55,051 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 14:47:55,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:55,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228162824] [2020-07-21 14:47:55,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:55,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:47:55,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137585049] [2020-07-21 14:47:55,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:47:55,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:47:55,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:47:55,054 INFO L87 Difference]: Start difference. First operand 6988 states and 10535 transitions. Second operand 4 states. [2020-07-21 14:47:55,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:55,502 INFO L93 Difference]: Finished difference Result 14818 states and 22344 transitions. [2020-07-21 14:47:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:47:55,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-21 14:47:55,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:55,521 INFO L225 Difference]: With dead ends: 14818 [2020-07-21 14:47:55,522 INFO L226 Difference]: Without dead ends: 7846 [2020-07-21 14:47:55,536 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 14:47:55,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7846 states. [2020-07-21 14:47:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7846 to 7088. [2020-07-21 14:47:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7088 states. [2020-07-21 14:47:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 10682 transitions. [2020-07-21 14:47:55,872 INFO L78 Accepts]: Start accepts. Automaton has 7088 states and 10682 transitions. Word has length 333 [2020-07-21 14:47:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:55,872 INFO L479 AbstractCegarLoop]: Abstraction has 7088 states and 10682 transitions. [2020-07-21 14:47:55,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:47:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7088 states and 10682 transitions. [2020-07-21 14:47:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 14:47:55,891 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:55,891 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 14:47:56,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:56,106 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 14:47:56,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash 765448332, now seen corresponding path program 1 times [2020-07-21 14:47:56,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:56,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538527621] [2020-07-21 14:47:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:56,383 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:56,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:56,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:47:56,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:47:56,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:56,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538527621] [2020-07-21 14:47:56,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:56,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:47:56,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200863749] [2020-07-21 14:47:56,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:47:56,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:56,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:47:56,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:47:56,574 INFO L87 Difference]: Start difference. First operand 7088 states and 10682 transitions. Second operand 3 states. [2020-07-21 14:47:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:56,981 INFO L93 Difference]: Finished difference Result 21179 states and 31916 transitions. [2020-07-21 14:47:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:47:56,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-21 14:47:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:57,016 INFO L225 Difference]: With dead ends: 21179 [2020-07-21 14:47:57,017 INFO L226 Difference]: Without dead ends: 14135 [2020-07-21 14:47:57,037 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 14:47:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2020-07-21 14:47:57,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 7104. [2020-07-21 14:47:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7104 states. [2020-07-21 14:47:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 10701 transitions. [2020-07-21 14:47:57,377 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 10701 transitions. Word has length 335 [2020-07-21 14:47:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:57,378 INFO L479 AbstractCegarLoop]: Abstraction has 7104 states and 10701 transitions. [2020-07-21 14:47:57,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:47:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 10701 transitions. [2020-07-21 14:47:57,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-21 14:47:57,394 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:57,395 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 14:47:57,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:57,611 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 14:47:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:57,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1214322502, now seen corresponding path program 1 times [2020-07-21 14:47:57,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:57,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253051474] [2020-07-21 14:47:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:57,893 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:57,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:57,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 14:47:57,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:58,110 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 14:47:58,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:58,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253051474] [2020-07-21 14:47:58,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:58,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 14:47:58,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557755527] [2020-07-21 14:47:58,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 14:47:58,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:58,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 14:47:58,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:47:58,113 INFO L87 Difference]: Start difference. First operand 7104 states and 10701 transitions. Second operand 9 states. [2020-07-21 14:48:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:06,290 INFO L93 Difference]: Finished difference Result 50664 states and 77793 transitions. [2020-07-21 14:48:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-21 14:48:06,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2020-07-21 14:48:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:06,416 INFO L225 Difference]: With dead ends: 50664 [2020-07-21 14:48:06,416 INFO L226 Difference]: Without dead ends: 48802 [2020-07-21 14:48:06,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2020-07-21 14:48:06,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48802 states. [2020-07-21 14:48:07,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48802 to 17290. [2020-07-21 14:48:07,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17290 states. [2020-07-21 14:48:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17290 states to 17290 states and 26269 transitions. [2020-07-21 14:48:07,450 INFO L78 Accepts]: Start accepts. Automaton has 17290 states and 26269 transitions. Word has length 337 [2020-07-21 14:48:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:07,451 INFO L479 AbstractCegarLoop]: Abstraction has 17290 states and 26269 transitions. [2020-07-21 14:48:07,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 14:48:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 17290 states and 26269 transitions. [2020-07-21 14:48:07,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-21 14:48:07,476 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:07,476 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 14:48:07,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:07,690 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 14:48:07,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:07,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1667546937, now seen corresponding path program 1 times [2020-07-21 14:48:07,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:07,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69916914] [2020-07-21 14:48:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:07,980 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:48:07,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:07,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:48:07,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:48:08,192 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 14:48:08,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:48:08,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69916914] [2020-07-21 14:48:08,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:48:08,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:48:08,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188978172] [2020-07-21 14:48:08,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:48:08,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:48:08,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:48:08,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:48:08,195 INFO L87 Difference]: Start difference. First operand 17290 states and 26269 transitions. Second operand 3 states. [2020-07-21 14:48:09,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:09,004 INFO L93 Difference]: Finished difference Result 39440 states and 60293 transitions. [2020-07-21 14:48:09,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:48:09,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 337 [2020-07-21 14:48:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:09,078 INFO L225 Difference]: With dead ends: 39440 [2020-07-21 14:48:09,078 INFO L226 Difference]: Without dead ends: 23760 [2020-07-21 14:48:09,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 335 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 14:48:09,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23760 states. [2020-07-21 14:48:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23760 to 20218. [2020-07-21 14:48:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20218 states. [2020-07-21 14:48:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20218 states to 20218 states and 31087 transitions. [2020-07-21 14:48:10,845 INFO L78 Accepts]: Start accepts. Automaton has 20218 states and 31087 transitions. Word has length 337 [2020-07-21 14:48:10,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:10,845 INFO L479 AbstractCegarLoop]: Abstraction has 20218 states and 31087 transitions. [2020-07-21 14:48:10,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:48:10,845 INFO L276 IsEmpty]: Start isEmpty. Operand 20218 states and 31087 transitions. [2020-07-21 14:48:10,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-21 14:48:10,861 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:10,862 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 14:48:11,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:11,069 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 14:48:11,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:11,070 INFO L82 PathProgramCache]: Analyzing trace with hash -922525433, now seen corresponding path program 1 times [2020-07-21 14:48:11,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:11,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275781240] [2020-07-21 14:48:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:11,330 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:48:11,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:11,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:48:11,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:48:11,402 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 14:48:11,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:48:11,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275781240] [2020-07-21 14:48:11,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:48:11,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:48:11,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120823987] [2020-07-21 14:48:11,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:48:11,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:48:11,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:48:11,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:48:11,405 INFO L87 Difference]: Start difference. First operand 20218 states and 31087 transitions. Second operand 4 states. [2020-07-21 14:48:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:13,310 INFO L93 Difference]: Finished difference Result 59991 states and 92170 transitions. [2020-07-21 14:48:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:48:13,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-21 14:48:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:13,372 INFO L225 Difference]: With dead ends: 59991 [2020-07-21 14:48:13,372 INFO L226 Difference]: Without dead ends: 40389 [2020-07-21 14:48:13,414 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 14:48:13,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40389 states. [2020-07-21 14:48:14,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40389 to 20867. [2020-07-21 14:48:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20867 states. [2020-07-21 14:48:14,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20867 states to 20867 states and 32152 transitions. [2020-07-21 14:48:14,419 INFO L78 Accepts]: Start accepts. Automaton has 20867 states and 32152 transitions. Word has length 337 [2020-07-21 14:48:14,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:14,419 INFO L479 AbstractCegarLoop]: Abstraction has 20867 states and 32152 transitions. [2020-07-21 14:48:14,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:48:14,419 INFO L276 IsEmpty]: Start isEmpty. Operand 20867 states and 32152 transitions. [2020-07-21 14:48:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-21 14:48:14,436 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:14,436 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 14:48:14,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:14,637 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 14:48:14,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:14,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1187005118, now seen corresponding path program 1 times [2020-07-21 14:48:14,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:14,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74405847] [2020-07-21 14:48:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:14,928 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:48:14,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:14,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:48:14,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:48:15,287 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 14:48:15,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:48:15,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74405847] [2020-07-21 14:48:15,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:48:15,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:48:15,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919559177] [2020-07-21 14:48:15,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:48:15,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:48:15,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:48:15,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:48:15,290 INFO L87 Difference]: Start difference. First operand 20867 states and 32152 transitions. Second operand 4 states. [2020-07-21 14:48:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:17,051 INFO L93 Difference]: Finished difference Result 60877 states and 93622 transitions. [2020-07-21 14:48:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:48:17,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-21 14:48:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:17,134 INFO L225 Difference]: With dead ends: 60877 [2020-07-21 14:48:17,134 INFO L226 Difference]: Without dead ends: 40077 [2020-07-21 14:48:17,163 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 14:48:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40077 states. [2020-07-21 14:48:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40077 to 40003. [2020-07-21 14:48:19,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40003 states. [2020-07-21 14:48:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40003 states to 40003 states and 61146 transitions. [2020-07-21 14:48:19,936 INFO L78 Accepts]: Start accepts. Automaton has 40003 states and 61146 transitions. Word has length 337 [2020-07-21 14:48:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:19,936 INFO L479 AbstractCegarLoop]: Abstraction has 40003 states and 61146 transitions. [2020-07-21 14:48:19,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:48:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 40003 states and 61146 transitions. [2020-07-21 14:48:19,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-21 14:48:19,960 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:19,960 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] [2020-07-21 14:48:20,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:20,161 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 14:48:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:20,162 INFO L82 PathProgramCache]: Analyzing trace with hash 457382277, now seen corresponding path program 1 times [2020-07-21 14:48:20,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:20,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211464254] [2020-07-21 14:48:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:20,436 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:48:20,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:20,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:48:20,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:48:20,521 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 14:48:20,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:48:20,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211464254] [2020-07-21 14:48:20,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:48:20,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:48:20,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524080513] [2020-07-21 14:48:20,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:48:20,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:48:20,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:48:20,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:48:20,525 INFO L87 Difference]: Start difference. First operand 40003 states and 61146 transitions. Second operand 4 states. [2020-07-21 14:48:23,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:23,848 INFO L93 Difference]: Finished difference Result 111929 states and 170853 transitions. [2020-07-21 14:48:23,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:48:23,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2020-07-21 14:48:23,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:23,961 INFO L225 Difference]: With dead ends: 111929 [2020-07-21 14:48:23,961 INFO L226 Difference]: Without dead ends: 73974 [2020-07-21 14:48:24,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 336 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 14:48:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73974 states. [2020-07-21 14:48:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73974 to 41597. [2020-07-21 14:48:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41597 states. [2020-07-21 14:48:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41597 states to 41597 states and 63712 transitions. [2020-07-21 14:48:27,475 INFO L78 Accepts]: Start accepts. Automaton has 41597 states and 63712 transitions. Word has length 339 [2020-07-21 14:48:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:27,476 INFO L479 AbstractCegarLoop]: Abstraction has 41597 states and 63712 transitions. [2020-07-21 14:48:27,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:48:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 41597 states and 63712 transitions. [2020-07-21 14:48:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-21 14:48:27,505 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:27,505 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 14:48:27,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:27,721 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 14:48:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:27,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1785808420, now seen corresponding path program 1 times [2020-07-21 14:48:27,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:27,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546205332] [2020-07-21 14:48:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:27,987 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:48:27,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:27,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:48:27,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:48:28,059 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 14:48:28,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:48:28,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546205332] [2020-07-21 14:48:28,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:48:28,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:48:28,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665625241] [2020-07-21 14:48:28,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:48:28,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:48:28,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:48:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:48:28,062 INFO L87 Difference]: Start difference. First operand 41597 states and 63712 transitions. Second operand 3 states. [2020-07-21 14:48:31,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:31,321 INFO L93 Difference]: Finished difference Result 117411 states and 179049 transitions. [2020-07-21 14:48:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:48:31,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2020-07-21 14:48:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:31,408 INFO L225 Difference]: With dead ends: 117411 [2020-07-21 14:48:31,408 INFO L226 Difference]: Without dead ends: 79537 [2020-07-21 14:48:31,447 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 14:48:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79537 states. [2020-07-21 14:48:33,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79537 to 41946. [2020-07-21 14:48:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41946 states. [2020-07-21 14:48:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41946 states to 41946 states and 64124 transitions. [2020-07-21 14:48:33,712 INFO L78 Accepts]: Start accepts. Automaton has 41946 states and 64124 transitions. Word has length 341 [2020-07-21 14:48:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:33,712 INFO L479 AbstractCegarLoop]: Abstraction has 41946 states and 64124 transitions. [2020-07-21 14:48:33,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:48:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 41946 states and 64124 transitions. [2020-07-21 14:48:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:48:33,745 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:33,745 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] [2020-07-21 14:48:33,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:33,959 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 14:48:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:33,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1861946699, now seen corresponding path program 1 times [2020-07-21 14:48:33,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:33,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623737091] [2020-07-21 14:48:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:34,352 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:48:34,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:34,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:48:34,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:48:34,454 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 14:48:34,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:48:34,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623737091] [2020-07-21 14:48:34,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:48:34,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:48:34,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924739321] [2020-07-21 14:48:34,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:48:34,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:48:34,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:48:34,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:48:34,456 INFO L87 Difference]: Start difference. First operand 41946 states and 64124 transitions. Second operand 3 states. [2020-07-21 14:48:38,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:38,443 INFO L93 Difference]: Finished difference Result 87844 states and 136395 transitions. [2020-07-21 14:48:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:48:38,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2020-07-21 14:48:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:38,524 INFO L225 Difference]: With dead ends: 87844 [2020-07-21 14:48:38,524 INFO L226 Difference]: Without dead ends: 68657 [2020-07-21 14:48:38,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 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 14:48:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68657 states. [2020-07-21 14:48:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68657 to 68655. [2020-07-21 14:48:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68655 states. [2020-07-21 14:48:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68655 states to 68655 states and 105707 transitions. [2020-07-21 14:48:42,198 INFO L78 Accepts]: Start accepts. Automaton has 68655 states and 105707 transitions. Word has length 343 [2020-07-21 14:48:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:42,199 INFO L479 AbstractCegarLoop]: Abstraction has 68655 states and 105707 transitions. [2020-07-21 14:48:42,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:48:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 68655 states and 105707 transitions. [2020-07-21 14:48:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:48:42,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:42,234 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] [2020-07-21 14:48:42,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:42,435 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 14:48:42,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:42,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1169325408, now seen corresponding path program 1 times [2020-07-21 14:48:42,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:42,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201962807] [2020-07-21 14:48:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:42,825 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:48:42,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:42,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:48:42,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:48:42,922 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 14:48:42,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:48:42,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201962807] [2020-07-21 14:48:42,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:48:42,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:48:42,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385569119] [2020-07-21 14:48:42,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:48:42,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:48:42,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:48:42,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:48:42,924 INFO L87 Difference]: Start difference. First operand 68655 states and 105707 transitions. Second operand 3 states. [2020-07-21 14:48:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:50,239 INFO L93 Difference]: Finished difference Result 155355 states and 242899 transitions. [2020-07-21 14:48:50,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:48:50,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2020-07-21 14:48:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:50,410 INFO L225 Difference]: With dead ends: 155355 [2020-07-21 14:48:50,410 INFO L226 Difference]: Without dead ends: 124687 [2020-07-21 14:48:50,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 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 14:48:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124687 states. [2020-07-21 14:48:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124687 to 124334. [2020-07-21 14:48:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124334 states. [2020-07-21 14:48:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124334 states to 124334 states and 192232 transitions. [2020-07-21 14:48:59,169 INFO L78 Accepts]: Start accepts. Automaton has 124334 states and 192232 transitions. Word has length 343 [2020-07-21 14:48:59,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:59,169 INFO L479 AbstractCegarLoop]: Abstraction has 124334 states and 192232 transitions. [2020-07-21 14:48:59,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:48:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 124334 states and 192232 transitions. [2020-07-21 14:48:59,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:48:59,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:59,234 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] [2020-07-21 14:48:59,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:59,445 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 14:48:59,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1168986784, now seen corresponding path program 1 times [2020-07-21 14:48:59,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:59,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800691218] [2020-07-21 14:48:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:59,834 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:48:59,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:59,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 14:48:59,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:49:00,075 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 14:49:00,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:49:00,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800691218] [2020-07-21 14:49:00,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:49:00,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 14:49:00,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706650782] [2020-07-21 14:49:00,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 14:49:00,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:49:00,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 14:49:00,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:49:00,078 INFO L87 Difference]: Start difference. First operand 124334 states and 192232 transitions. Second operand 9 states. [2020-07-21 14:49:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:49:21,934 INFO L93 Difference]: Finished difference Result 352420 states and 549393 transitions. [2020-07-21 14:49:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 14:49:21,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 343 [2020-07-21 14:49:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:49:22,361 INFO L225 Difference]: With dead ends: 352420 [2020-07-21 14:49:22,361 INFO L226 Difference]: Without dead ends: 283961 [2020-07-21 14:49:22,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-07-21 14:49:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283961 states. [2020-07-21 14:49:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283961 to 118542. [2020-07-21 14:49:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118542 states. [2020-07-21 14:49:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118542 states to 118542 states and 181664 transitions. [2020-07-21 14:49:35,946 INFO L78 Accepts]: Start accepts. Automaton has 118542 states and 181664 transitions. Word has length 343 [2020-07-21 14:49:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:49:35,947 INFO L479 AbstractCegarLoop]: Abstraction has 118542 states and 181664 transitions. [2020-07-21 14:49:35,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 14:49:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 118542 states and 181664 transitions. [2020-07-21 14:49:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:49:36,013 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:49:36,014 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] [2020-07-21 14:49:36,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:49:36,227 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 14:49:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:49:36,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1284242084, now seen corresponding path program 1 times [2020-07-21 14:49:36,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:49:36,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976148615] [2020-07-21 14:49:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:49:36,611 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:49:36,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:49:36,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:49:36,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:49:36,847 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 14:49:36,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:49:36,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976148615] [2020-07-21 14:49:36,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:49:36,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:49:36,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964161979] [2020-07-21 14:49:36,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:49:36,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:49:36,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:49:36,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:49:36,849 INFO L87 Difference]: Start difference. First operand 118542 states and 181664 transitions. Second operand 5 states. [2020-07-21 14:49:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:49:52,869 INFO L93 Difference]: Finished difference Result 273401 states and 424920 transitions. [2020-07-21 14:49:52,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:49:52,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2020-07-21 14:49:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:49:53,156 INFO L225 Difference]: With dead ends: 273401 [2020-07-21 14:49:53,157 INFO L226 Difference]: Without dead ends: 216088 [2020-07-21 14:49:53,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:49:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216088 states. [2020-07-21 14:50:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216088 to 216032. [2020-07-21 14:50:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216032 states. [2020-07-21 14:50:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216032 states to 216032 states and 331498 transitions. [2020-07-21 14:50:12,333 INFO L78 Accepts]: Start accepts. Automaton has 216032 states and 331498 transitions. Word has length 343 [2020-07-21 14:50:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:50:12,333 INFO L479 AbstractCegarLoop]: Abstraction has 216032 states and 331498 transitions. [2020-07-21 14:50:12,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:50:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 216032 states and 331498 transitions. [2020-07-21 14:50:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:50:12,451 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:50:12,451 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] [2020-07-21 14:50:12,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:50:12,652 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 14:50:12,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:50:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash 836722281, now seen corresponding path program 1 times [2020-07-21 14:50:12,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:50:12,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707175489] [2020-07-21 14:50:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:50:13,028 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:50:13,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:50:13,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:50:13,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:50:13,133 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 14:50:13,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:50:13,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707175489] [2020-07-21 14:50:13,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:50:13,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:50:13,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402772837] [2020-07-21 14:50:13,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:50:13,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:50:13,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:50:13,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:50:13,136 INFO L87 Difference]: Start difference. First operand 216032 states and 331498 transitions. Second operand 3 states. [2020-07-21 14:50:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:50:46,752 INFO L93 Difference]: Finished difference Result 633381 states and 971430 transitions. [2020-07-21 14:50:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:50:46,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2020-07-21 14:50:46,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:50:47,366 INFO L225 Difference]: With dead ends: 633381 [2020-07-21 14:50:47,366 INFO L226 Difference]: Without dead ends: 421287 [2020-07-21 14:50:47,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 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 14:50:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421287 states. [2020-07-21 14:51:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421287 to 420960. [2020-07-21 14:51:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420960 states. [2020-07-21 14:51:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420960 states to 420960 states and 642809 transitions. [2020-07-21 14:51:30,718 INFO L78 Accepts]: Start accepts. Automaton has 420960 states and 642809 transitions. Word has length 343 [2020-07-21 14:51:30,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:51:30,719 INFO L479 AbstractCegarLoop]: Abstraction has 420960 states and 642809 transitions. [2020-07-21 14:51:30,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:51:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 420960 states and 642809 transitions. [2020-07-21 14:51:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:51:30,937 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:51:30,937 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] [2020-07-21 14:51:31,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:51:31,138 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 14:51:31,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:51:31,139 INFO L82 PathProgramCache]: Analyzing trace with hash -103384527, now seen corresponding path program 1 times [2020-07-21 14:51:31,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:51:31,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456946544] [2020-07-21 14:51:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:51:31,403 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:51:31,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:51:31,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:51:31,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:51:31,478 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 14:51:31,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:51:31,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456946544] [2020-07-21 14:51:31,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:51:31,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:51:31,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238812069] [2020-07-21 14:51:31,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:51:31,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:51:31,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:51:31,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:51:31,481 INFO L87 Difference]: Start difference. First operand 420960 states and 642809 transitions. Second operand 4 states. [2020-07-21 14:52:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:52:09,433 INFO L93 Difference]: Finished difference Result 837095 states and 1277913 transitions. [2020-07-21 14:52:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:52:09,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 343 [2020-07-21 14:52:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:52:10,041 INFO L225 Difference]: With dead ends: 837095 [2020-07-21 14:52:10,041 INFO L226 Difference]: Without dead ends: 420488 [2020-07-21 14:52:10,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 340 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 14:52:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420488 states. [2020-07-21 14:52:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420488 to 420488. [2020-07-21 14:52:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420488 states. [2020-07-21 14:52:57,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420488 states to 420488 states and 642004 transitions. [2020-07-21 14:52:57,844 INFO L78 Accepts]: Start accepts. Automaton has 420488 states and 642004 transitions. Word has length 343 [2020-07-21 14:52:57,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:52:57,844 INFO L479 AbstractCegarLoop]: Abstraction has 420488 states and 642004 transitions. [2020-07-21 14:52:57,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:52:57,844 INFO L276 IsEmpty]: Start isEmpty. Operand 420488 states and 642004 transitions. [2020-07-21 14:52:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:52:58,058 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:52:58,058 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] [2020-07-21 14:52:58,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:52:58,259 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 14:52:58,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:52:58,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1058148860, now seen corresponding path program 1 times [2020-07-21 14:52:58,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:52:58,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093945148] [2020-07-21 14:52:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:52:58,518 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:52:58,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:52:58,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:52:58,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:52:58,612 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 14:52:58,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:52:58,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093945148] [2020-07-21 14:52:58,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:52:58,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:52:58,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271889016] [2020-07-21 14:52:58,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:52:58,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:52:58,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:52:58,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:52:58,615 INFO L87 Difference]: Start difference. First operand 420488 states and 642004 transitions. Second operand 4 states. [2020-07-21 14:53:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:53:57,828 INFO L93 Difference]: Finished difference Result 1113574 states and 1699372 transitions. [2020-07-21 14:53:57,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:53:57,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 343 [2020-07-21 14:53:57,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:53:58,863 INFO L225 Difference]: With dead ends: 1113574 [2020-07-21 14:53:58,864 INFO L226 Difference]: Without dead ends: 696549 [2020-07-21 14:53:59,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 340 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 14:53:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696549 states. [2020-07-21 14:54:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696549 to 405494. [2020-07-21 14:54:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405494 states. [2020-07-21 14:54:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405494 states to 405494 states and 619526 transitions. [2020-07-21 14:54:53,631 INFO L78 Accepts]: Start accepts. Automaton has 405494 states and 619526 transitions. Word has length 343 [2020-07-21 14:54:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:54:53,631 INFO L479 AbstractCegarLoop]: Abstraction has 405494 states and 619526 transitions. [2020-07-21 14:54:53,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:54:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 405494 states and 619526 transitions. [2020-07-21 14:54:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-07-21 14:54:53,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:54:53,831 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, 1, 1] [2020-07-21 14:54:54,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:54:54,032 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 14:54:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:54:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash 355146, now seen corresponding path program 1 times [2020-07-21 14:54:54,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:54:54,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501554081] [2020-07-21 14:54:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:54:54,295 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:54:54,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:54:54,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:54:54,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:54:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:54:54,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:54:54,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501554081] [2020-07-21 14:54:54,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:54:54,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:54:54,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47768338] [2020-07-21 14:54:54,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:54:54,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:54:54,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:54:54,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:54:54,375 INFO L87 Difference]: Start difference. First operand 405494 states and 619526 transitions. Second operand 3 states. [2020-07-21 14:55:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:55:54,251 INFO L93 Difference]: Finished difference Result 873712 states and 1331850 transitions. [2020-07-21 14:55:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:55:54,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 346 [2020-07-21 14:55:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:55:55,198 INFO L225 Difference]: With dead ends: 873712 [2020-07-21 14:55:55,198 INFO L226 Difference]: Without dead ends: 606590 [2020-07-21 14:55:55,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 344 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 14:55:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606590 states. [2020-07-21 14:56:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606590 to 405047. [2020-07-21 14:56:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405047 states. [2020-07-21 14:56:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405047 states to 405047 states and 618835 transitions. [2020-07-21 14:56:43,795 INFO L78 Accepts]: Start accepts. Automaton has 405047 states and 618835 transitions. Word has length 346 [2020-07-21 14:56:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:56:43,795 INFO L479 AbstractCegarLoop]: Abstraction has 405047 states and 618835 transitions. [2020-07-21 14:56:43,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:56:43,795 INFO L276 IsEmpty]: Start isEmpty. Operand 405047 states and 618835 transitions. [2020-07-21 14:56:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-07-21 14:56:43,979 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:56:43,980 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, 1, 1] [2020-07-21 14:56:44,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:56:44,181 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 14:56:44,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:56:44,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1724010859, now seen corresponding path program 1 times [2020-07-21 14:56:44,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:56:44,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012588235] [2020-07-21 14:56:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:56:44,445 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:56:44,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:56:44,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 14:56:44,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:56:44,575 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 14:56:44,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:56:44,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012588235] [2020-07-21 14:56:44,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:56:44,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 14:56:44,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870020757] [2020-07-21 14:56:44,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 14:56:44,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:56:44,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 14:56:44,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:56:44,577 INFO L87 Difference]: Start difference. First operand 405047 states and 618835 transitions. Second operand 9 states.