/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:52:58,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:52:58,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:52:58,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:52:58,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:52:58,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:52:58,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:52:58,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:52:58,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:52:58,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:52:58,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:52:58,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:52:58,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:52:58,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:52:58,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:52:58,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:52:58,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:52:58,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:52:58,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:52:58,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:52:58,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:52:58,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:52:58,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:52:58,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:52:58,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 23:52:58,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 23:52:58,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 23:52:58,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 23:52:58,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 23:52:58,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-21 23:52:58,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:52:58,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:52:58,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:52:58,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 23:52:58,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:52:58,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:52:58,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:52:58,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:52:58,516 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:52:58,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:52:58,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:52:58,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:52:58,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:52:58,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:52:58,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:52:58,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:52:58,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:52:58,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:52:58,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:52:58,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:52:58,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:52:58,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:52:58,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:52:58,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:52:58,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:52:58,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:52:58,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:52:58,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:52:58,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:52:58,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:52:58,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:52:58,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:52:58,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:52:58,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 23:52:58,778 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:52:58,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:52:58,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:52:58,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:52:58,796 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:52:58,797 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 23:52:58,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b323418/4a37f7ba55c14e77bffefe25ad017c47/FLAGd4331d708 [2020-07-21 23:52:59,472 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:52:59,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 23:52:59,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b323418/4a37f7ba55c14e77bffefe25ad017c47/FLAGd4331d708 [2020-07-21 23:52:59,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b323418/4a37f7ba55c14e77bffefe25ad017c47 [2020-07-21 23:52:59,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:52:59,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:52:59,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:52:59,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:52:59,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:52:59,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:52:59" (1/1) ... [2020-07-21 23:52:59,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325a23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:52:59, skipping insertion in model container [2020-07-21 23:52:59,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:52:59" (1/1) ... [2020-07-21 23:52:59,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:52:59,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:53:01,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:53:01,398 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:53:02,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:53:02,453 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:53:02,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02 WrapperNode [2020-07-21 23:53:02,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:53:02,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:53:02,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:53:02,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:53:02,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02" (1/1) ... [2020-07-21 23:53:02,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02" (1/1) ... [2020-07-21 23:53:02,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02" (1/1) ... [2020-07-21 23:53:02,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02" (1/1) ... [2020-07-21 23:53:02,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02" (1/1) ... [2020-07-21 23:53:02,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02" (1/1) ... [2020-07-21 23:53:02,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02" (1/1) ... [2020-07-21 23:53:02,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:53:02,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:53:02,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:53:02,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:53:02,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:53:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:53:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:53:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:53:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:53:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:53:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 23:53:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-21 23:53:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 23:53:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-21 23:53:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-21 23:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-21 23:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-21 23:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-21 23:53:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-21 23:53:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-21 23:53:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-21 23:53:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 23:53:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:53:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:53:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:53:06,104 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:53:06,105 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 23:53:06,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:53:06 BoogieIcfgContainer [2020-07-21 23:53:06,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:53:06,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:53:06,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:53:06,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:53:06,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:52:59" (1/3) ... [2020-07-21 23:53:06,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0d2112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:53:06, skipping insertion in model container [2020-07-21 23:53:06,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:53:02" (2/3) ... [2020-07-21 23:53:06,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0d2112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:53:06, skipping insertion in model container [2020-07-21 23:53:06,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:53:06" (3/3) ... [2020-07-21 23:53:06,139 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 23:53:06,153 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:53:06,165 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-21 23:53:06,183 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-21 23:53:06,219 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:53:06,219 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:53:06,219 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:53:06,220 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:53:06,220 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:53:06,220 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:53:06,220 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:53:06,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:53:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2020-07-21 23:53:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 23:53:06,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:06,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:06,307 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:06,317 INFO L82 PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times [2020-07-21 23:53:06,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:06,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116790945] [2020-07-21 23:53:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:06,846 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:53:06,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:06,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:53:06,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:07,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:07,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116790945] [2020-07-21 23:53:07,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:07,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:53:07,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310313388] [2020-07-21 23:53:07,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:53:07,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:07,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:53:07,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:53:07,275 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 4 states. [2020-07-21 23:53:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:07,621 INFO L93 Difference]: Finished difference Result 3027 states and 5427 transitions. [2020-07-21 23:53:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:53:07,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-21 23:53:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:07,653 INFO L225 Difference]: With dead ends: 3027 [2020-07-21 23:53:07,654 INFO L226 Difference]: Without dead ends: 2005 [2020-07-21 23:53:07,663 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 23:53:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2020-07-21 23:53:07,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1904. [2020-07-21 23:53:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-07-21 23:53:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2895 transitions. [2020-07-21 23:53:07,816 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2895 transitions. Word has length 327 [2020-07-21 23:53:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:07,819 INFO L479 AbstractCegarLoop]: Abstraction has 1904 states and 2895 transitions. [2020-07-21 23:53:07,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:53:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2895 transitions. [2020-07-21 23:53:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-21 23:53:07,831 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:07,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:08,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:08,047 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:08,048 INFO L82 PathProgramCache]: Analyzing trace with hash -2119643028, now seen corresponding path program 1 times [2020-07-21 23:53:08,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:08,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767745188] [2020-07-21 23:53:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:08,341 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:08,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:08,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:08,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:08,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:08,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767745188] [2020-07-21 23:53:08,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:08,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:08,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740928003] [2020-07-21 23:53:08,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:08,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:08,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:08,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:08,525 INFO L87 Difference]: Start difference. First operand 1904 states and 2895 transitions. Second operand 3 states. [2020-07-21 23:53:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:08,670 INFO L93 Difference]: Finished difference Result 5671 states and 8621 transitions. [2020-07-21 23:53:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:08,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-21 23:53:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:08,691 INFO L225 Difference]: With dead ends: 5671 [2020-07-21 23:53:08,691 INFO L226 Difference]: Without dead ends: 3790 [2020-07-21 23:53:08,697 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 23:53:08,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2020-07-21 23:53:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 1915. [2020-07-21 23:53:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-07-21 23:53:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2911 transitions. [2020-07-21 23:53:08,800 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2911 transitions. Word has length 329 [2020-07-21 23:53:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:08,801 INFO L479 AbstractCegarLoop]: Abstraction has 1915 states and 2911 transitions. [2020-07-21 23:53:08,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2911 transitions. [2020-07-21 23:53:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-21 23:53:08,809 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:08,810 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 23:53:09,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:09,024 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:09,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1677044561, now seen corresponding path program 1 times [2020-07-21 23:53:09,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:09,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266390775] [2020-07-21 23:53:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:09,337 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:53:09,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:09,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:09,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:09,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:09,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266390775] [2020-07-21 23:53:09,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:09,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:09,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734004716] [2020-07-21 23:53:09,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:09,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:09,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:09,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:09,549 INFO L87 Difference]: Start difference. First operand 1915 states and 2911 transitions. Second operand 3 states. [2020-07-21 23:53:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:09,787 INFO L93 Difference]: Finished difference Result 5504 states and 8321 transitions. [2020-07-21 23:53:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:09,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-21 23:53:09,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:09,806 INFO L225 Difference]: With dead ends: 5504 [2020-07-21 23:53:09,807 INFO L226 Difference]: Without dead ends: 3740 [2020-07-21 23:53:09,814 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 23:53:09,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2020-07-21 23:53:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3641. [2020-07-21 23:53:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3641 states. [2020-07-21 23:53:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 5529 transitions. [2020-07-21 23:53:09,978 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 5529 transitions. Word has length 329 [2020-07-21 23:53:09,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:09,980 INFO L479 AbstractCegarLoop]: Abstraction has 3641 states and 5529 transitions. [2020-07-21 23:53:09,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 5529 transitions. [2020-07-21 23:53:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 23:53:09,991 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:09,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:10,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:10,206 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:10,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:10,207 INFO L82 PathProgramCache]: Analyzing trace with hash -591387259, now seen corresponding path program 1 times [2020-07-21 23:53:10,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:10,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675043428] [2020-07-21 23:53:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:10,494 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:10,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:10,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:10,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:10,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:10,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675043428] [2020-07-21 23:53:10,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:10,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:10,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825057911] [2020-07-21 23:53:10,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:10,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:10,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:10,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:10,618 INFO L87 Difference]: Start difference. First operand 3641 states and 5529 transitions. Second operand 3 states. [2020-07-21 23:53:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:10,874 INFO L93 Difference]: Finished difference Result 10828 states and 16433 transitions. [2020-07-21 23:53:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:10,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 23:53:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:10,909 INFO L225 Difference]: With dead ends: 10828 [2020-07-21 23:53:10,910 INFO L226 Difference]: Without dead ends: 7237 [2020-07-21 23:53:10,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7237 states. [2020-07-21 23:53:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 3657. [2020-07-21 23:53:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3657 states. [2020-07-21 23:53:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5548 transitions. [2020-07-21 23:53:11,110 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 5548 transitions. Word has length 330 [2020-07-21 23:53:11,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:11,111 INFO L479 AbstractCegarLoop]: Abstraction has 3657 states and 5548 transitions. [2020-07-21 23:53:11,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 5548 transitions. [2020-07-21 23:53:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 23:53:11,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:11,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:11,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:11,338 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:11,338 INFO L82 PathProgramCache]: Analyzing trace with hash -979200554, now seen corresponding path program 1 times [2020-07-21 23:53:11,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:11,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288767007] [2020-07-21 23:53:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:11,626 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:11,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:11,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:53:11,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:11,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:11,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288767007] [2020-07-21 23:53:11,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:11,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:53:11,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381113101] [2020-07-21 23:53:11,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:53:11,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:11,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:53:11,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:53:11,779 INFO L87 Difference]: Start difference. First operand 3657 states and 5548 transitions. Second operand 4 states. [2020-07-21 23:53:12,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:12,049 INFO L93 Difference]: Finished difference Result 8097 states and 12284 transitions. [2020-07-21 23:53:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:53:12,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-07-21 23:53:12,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:12,069 INFO L225 Difference]: With dead ends: 8097 [2020-07-21 23:53:12,070 INFO L226 Difference]: Without dead ends: 4142 [2020-07-21 23:53:12,079 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 23:53:12,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2020-07-21 23:53:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 4043. [2020-07-21 23:53:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4043 states. [2020-07-21 23:53:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 6116 transitions. [2020-07-21 23:53:12,247 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 6116 transitions. Word has length 331 [2020-07-21 23:53:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:12,247 INFO L479 AbstractCegarLoop]: Abstraction has 4043 states and 6116 transitions. [2020-07-21 23:53:12,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:53:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 6116 transitions. [2020-07-21 23:53:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 23:53:12,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:12,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:12,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:12,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:12,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:12,477 INFO L82 PathProgramCache]: Analyzing trace with hash 518618689, now seen corresponding path program 1 times [2020-07-21 23:53:12,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:12,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146030437] [2020-07-21 23:53:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:12,764 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:12,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:12,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:12,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:12,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:12,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146030437] [2020-07-21 23:53:12,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:12,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:12,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786915559] [2020-07-21 23:53:12,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:12,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:12,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:12,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:12,859 INFO L87 Difference]: Start difference. First operand 4043 states and 6116 transitions. Second operand 3 states. [2020-07-21 23:53:13,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:13,186 INFO L93 Difference]: Finished difference Result 11715 states and 17689 transitions. [2020-07-21 23:53:13,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:13,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 23:53:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:13,219 INFO L225 Difference]: With dead ends: 11715 [2020-07-21 23:53:13,219 INFO L226 Difference]: Without dead ends: 7714 [2020-07-21 23:53:13,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7714 states. [2020-07-21 23:53:13,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 4038. [2020-07-21 23:53:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4038 states. [2020-07-21 23:53:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 6105 transitions. [2020-07-21 23:53:13,412 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 6105 transitions. Word has length 333 [2020-07-21 23:53:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:13,413 INFO L479 AbstractCegarLoop]: Abstraction has 4038 states and 6105 transitions. [2020-07-21 23:53:13,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:13,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 6105 transitions. [2020-07-21 23:53:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 23:53:13,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:13,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:13,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:13,641 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:13,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:13,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1976118812, now seen corresponding path program 1 times [2020-07-21 23:53:13,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:13,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511969264] [2020-07-21 23:53:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:13,924 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:13,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:53:13,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:14,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:14,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511969264] [2020-07-21 23:53:14,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:14,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:53:14,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519082661] [2020-07-21 23:53:14,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:53:14,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:14,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:53:14,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:53:14,027 INFO L87 Difference]: Start difference. First operand 4038 states and 6105 transitions. Second operand 4 states. [2020-07-21 23:53:14,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:14,343 INFO L93 Difference]: Finished difference Result 11548 states and 17355 transitions. [2020-07-21 23:53:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:53:14,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-21 23:53:14,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:14,372 INFO L225 Difference]: With dead ends: 11548 [2020-07-21 23:53:14,372 INFO L226 Difference]: Without dead ends: 7913 [2020-07-21 23:53:14,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:53:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2020-07-21 23:53:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 4338. [2020-07-21 23:53:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4338 states. [2020-07-21 23:53:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 6615 transitions. [2020-07-21 23:53:14,653 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 6615 transitions. Word has length 333 [2020-07-21 23:53:14,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:14,653 INFO L479 AbstractCegarLoop]: Abstraction has 4338 states and 6615 transitions. [2020-07-21 23:53:14,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:53:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 6615 transitions. [2020-07-21 23:53:14,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 23:53:14,670 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:14,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:14,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:14,885 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:14,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:14,886 INFO L82 PathProgramCache]: Analyzing trace with hash -156138669, now seen corresponding path program 1 times [2020-07-21 23:53:14,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:14,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60051340] [2020-07-21 23:53:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:15,194 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:53:15,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:15,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:15,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:15,354 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 23:53:15,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:15,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60051340] [2020-07-21 23:53:15,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:15,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:15,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84136711] [2020-07-21 23:53:15,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:15,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:15,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:15,359 INFO L87 Difference]: Start difference. First operand 4338 states and 6615 transitions. Second operand 3 states. [2020-07-21 23:53:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:15,741 INFO L93 Difference]: Finished difference Result 12091 states and 18280 transitions. [2020-07-21 23:53:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:15,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 23:53:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:15,764 INFO L225 Difference]: With dead ends: 12091 [2020-07-21 23:53:15,764 INFO L226 Difference]: Without dead ends: 8276 [2020-07-21 23:53:15,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2020-07-21 23:53:16,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 8160. [2020-07-21 23:53:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8160 states. [2020-07-21 23:53:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8160 states to 8160 states and 12359 transitions. [2020-07-21 23:53:16,250 INFO L78 Accepts]: Start accepts. Automaton has 8160 states and 12359 transitions. Word has length 333 [2020-07-21 23:53:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:16,251 INFO L479 AbstractCegarLoop]: Abstraction has 8160 states and 12359 transitions. [2020-07-21 23:53:16,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 8160 states and 12359 transitions. [2020-07-21 23:53:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 23:53:16,271 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:16,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:16,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:16,486 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:16,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:16,487 INFO L82 PathProgramCache]: Analyzing trace with hash -506759930, now seen corresponding path program 1 times [2020-07-21 23:53:16,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:16,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496231147] [2020-07-21 23:53:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:16,802 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:53:16,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:16,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 23:53:16,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:17,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:17,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496231147] [2020-07-21 23:53:17,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:17,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 23:53:17,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724764005] [2020-07-21 23:53:17,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 23:53:17,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:17,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 23:53:17,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 23:53:17,081 INFO L87 Difference]: Start difference. First operand 8160 states and 12359 transitions. Second operand 8 states. [2020-07-21 23:53:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:19,885 INFO L93 Difference]: Finished difference Result 18416 states and 27853 transitions. [2020-07-21 23:53:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 23:53:19,886 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2020-07-21 23:53:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:19,921 INFO L225 Difference]: With dead ends: 18416 [2020-07-21 23:53:19,921 INFO L226 Difference]: Without dead ends: 13184 [2020-07-21 23:53:19,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-21 23:53:19,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13184 states. [2020-07-21 23:53:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13184 to 10428. [2020-07-21 23:53:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10428 states. [2020-07-21 23:53:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10428 states to 10428 states and 15687 transitions. [2020-07-21 23:53:20,541 INFO L78 Accepts]: Start accepts. Automaton has 10428 states and 15687 transitions. Word has length 333 [2020-07-21 23:53:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:20,542 INFO L479 AbstractCegarLoop]: Abstraction has 10428 states and 15687 transitions. [2020-07-21 23:53:20,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 23:53:20,542 INFO L276 IsEmpty]: Start isEmpty. Operand 10428 states and 15687 transitions. [2020-07-21 23:53:20,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 23:53:20,564 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:20,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:20,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:20,859 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash 329818391, now seen corresponding path program 1 times [2020-07-21 23:53:20,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:20,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987564603] [2020-07-21 23:53:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:21,174 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:53:21,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:21,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:21,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:21,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:21,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987564603] [2020-07-21 23:53:21,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:21,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:21,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953884841] [2020-07-21 23:53:21,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:21,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:21,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:21,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:21,260 INFO L87 Difference]: Start difference. First operand 10428 states and 15687 transitions. Second operand 3 states. [2020-07-21 23:53:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:21,749 INFO L93 Difference]: Finished difference Result 20342 states and 30558 transitions. [2020-07-21 23:53:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:21,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 23:53:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:21,778 INFO L225 Difference]: With dead ends: 20342 [2020-07-21 23:53:21,778 INFO L226 Difference]: Without dead ends: 12484 [2020-07-21 23:53:21,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12484 states. [2020-07-21 23:53:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12484 to 11130. [2020-07-21 23:53:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11130 states. [2020-07-21 23:53:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11130 states to 11130 states and 16845 transitions. [2020-07-21 23:53:22,492 INFO L78 Accepts]: Start accepts. Automaton has 11130 states and 16845 transitions. Word has length 333 [2020-07-21 23:53:22,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:22,492 INFO L479 AbstractCegarLoop]: Abstraction has 11130 states and 16845 transitions. [2020-07-21 23:53:22,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 11130 states and 16845 transitions. [2020-07-21 23:53:22,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 23:53:22,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:22,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:22,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:22,724 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:22,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:22,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1493066537, now seen corresponding path program 1 times [2020-07-21 23:53:22,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:22,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116907593] [2020-07-21 23:53:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:23,006 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:23,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:23,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:23,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:23,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:23,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116907593] [2020-07-21 23:53:23,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:23,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:23,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087348916] [2020-07-21 23:53:23,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:23,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:23,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:23,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:23,085 INFO L87 Difference]: Start difference. First operand 11130 states and 16845 transitions. Second operand 3 states. [2020-07-21 23:53:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:23,868 INFO L93 Difference]: Finished difference Result 32995 states and 49913 transitions. [2020-07-21 23:53:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:23,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 23:53:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:23,893 INFO L225 Difference]: With dead ends: 32995 [2020-07-21 23:53:23,893 INFO L226 Difference]: Without dead ends: 22079 [2020-07-21 23:53:23,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22079 states. [2020-07-21 23:53:24,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22079 to 11199. [2020-07-21 23:53:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11199 states. [2020-07-21 23:53:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11199 states to 11199 states and 16938 transitions. [2020-07-21 23:53:24,438 INFO L78 Accepts]: Start accepts. Automaton has 11199 states and 16938 transitions. Word has length 333 [2020-07-21 23:53:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:24,438 INFO L479 AbstractCegarLoop]: Abstraction has 11199 states and 16938 transitions. [2020-07-21 23:53:24,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 11199 states and 16938 transitions. [2020-07-21 23:53:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-21 23:53:24,453 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:24,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:24,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:24,659 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:24,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:24,660 INFO L82 PathProgramCache]: Analyzing trace with hash -490341952, now seen corresponding path program 1 times [2020-07-21 23:53:24,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:24,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307988048] [2020-07-21 23:53:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:24,931 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:24,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:24,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:24,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:25,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:25,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307988048] [2020-07-21 23:53:25,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:25,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:25,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010856034] [2020-07-21 23:53:25,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:25,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:25,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:25,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:25,103 INFO L87 Difference]: Start difference. First operand 11199 states and 16938 transitions. Second operand 3 states. [2020-07-21 23:53:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:26,576 INFO L93 Difference]: Finished difference Result 33052 states and 49969 transitions. [2020-07-21 23:53:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:26,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-07-21 23:53:26,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:26,602 INFO L225 Difference]: With dead ends: 33052 [2020-07-21 23:53:26,602 INFO L226 Difference]: Without dead ends: 22144 [2020-07-21 23:53:26,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22144 states. [2020-07-21 23:53:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22144 to 11284. [2020-07-21 23:53:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11284 states. [2020-07-21 23:53:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 17037 transitions. [2020-07-21 23:53:27,318 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 17037 transitions. Word has length 334 [2020-07-21 23:53:27,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:27,318 INFO L479 AbstractCegarLoop]: Abstraction has 11284 states and 17037 transitions. [2020-07-21 23:53:27,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 17037 transitions. [2020-07-21 23:53:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 23:53:27,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:27,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:27,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:27,548 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:27,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1379273382, now seen corresponding path program 1 times [2020-07-21 23:53:27,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:27,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687210089] [2020-07-21 23:53:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:27,819 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:27,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:27,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:53:27,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:27,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:27,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687210089] [2020-07-21 23:53:27,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:27,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:53:27,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058993741] [2020-07-21 23:53:27,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:53:27,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:27,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:53:27,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:53:27,896 INFO L87 Difference]: Start difference. First operand 11284 states and 17037 transitions. Second operand 4 states. [2020-07-21 23:53:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:28,847 INFO L93 Difference]: Finished difference Result 32331 states and 48589 transitions. [2020-07-21 23:53:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:53:28,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-07-21 23:53:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:28,868 INFO L225 Difference]: With dead ends: 32331 [2020-07-21 23:53:28,868 INFO L226 Difference]: Without dead ends: 22191 [2020-07-21 23:53:28,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:53:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22191 states. [2020-07-21 23:53:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22191 to 12311. [2020-07-21 23:53:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12311 states. [2020-07-21 23:53:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12311 states to 12311 states and 18687 transitions. [2020-07-21 23:53:29,439 INFO L78 Accepts]: Start accepts. Automaton has 12311 states and 18687 transitions. Word has length 335 [2020-07-21 23:53:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:29,439 INFO L479 AbstractCegarLoop]: Abstraction has 12311 states and 18687 transitions. [2020-07-21 23:53:29,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:53:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 12311 states and 18687 transitions. [2020-07-21 23:53:29,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 23:53:29,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:29,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:29,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:29,661 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:29,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:29,662 INFO L82 PathProgramCache]: Analyzing trace with hash 253581998, now seen corresponding path program 1 times [2020-07-21 23:53:29,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:29,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510238825] [2020-07-21 23:53:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:29,939 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:29,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:29,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:53:29,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:30,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:30,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510238825] [2020-07-21 23:53:30,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:30,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:53:30,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583071690] [2020-07-21 23:53:30,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:53:30,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:30,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:53:30,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:53:30,019 INFO L87 Difference]: Start difference. First operand 12311 states and 18687 transitions. Second operand 4 states. [2020-07-21 23:53:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:30,851 INFO L93 Difference]: Finished difference Result 26310 states and 39707 transitions. [2020-07-21 23:53:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:53:30,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-07-21 23:53:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:30,868 INFO L225 Difference]: With dead ends: 26310 [2020-07-21 23:53:30,869 INFO L226 Difference]: Without dead ends: 13892 [2020-07-21 23:53:30,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:53:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13892 states. [2020-07-21 23:53:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13892 to 13768. [2020-07-21 23:53:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13768 states. [2020-07-21 23:53:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13768 states to 13768 states and 20680 transitions. [2020-07-21 23:53:31,459 INFO L78 Accepts]: Start accepts. Automaton has 13768 states and 20680 transitions. Word has length 335 [2020-07-21 23:53:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:31,459 INFO L479 AbstractCegarLoop]: Abstraction has 13768 states and 20680 transitions. [2020-07-21 23:53:31,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:53:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 13768 states and 20680 transitions. [2020-07-21 23:53:31,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 23:53:31,470 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:31,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:31,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:31,672 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:31,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1042982806, now seen corresponding path program 1 times [2020-07-21 23:53:31,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:31,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615801390] [2020-07-21 23:53:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:31,987 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:53:31,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:31,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 1599 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:31,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:32,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:32,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615801390] [2020-07-21 23:53:32,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:32,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:32,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228289652] [2020-07-21 23:53:32,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:32,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:32,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:32,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:32,068 INFO L87 Difference]: Start difference. First operand 13768 states and 20680 transitions. Second operand 3 states. [2020-07-21 23:53:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:32,964 INFO L93 Difference]: Finished difference Result 26942 states and 40621 transitions. [2020-07-21 23:53:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:32,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-21 23:53:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:32,983 INFO L225 Difference]: With dead ends: 26942 [2020-07-21 23:53:32,983 INFO L226 Difference]: Without dead ends: 18440 [2020-07-21 23:53:32,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18440 states. [2020-07-21 23:53:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18440 to 16348. [2020-07-21 23:53:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16348 states. [2020-07-21 23:53:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16348 states to 16348 states and 24748 transitions. [2020-07-21 23:53:33,764 INFO L78 Accepts]: Start accepts. Automaton has 16348 states and 24748 transitions. Word has length 335 [2020-07-21 23:53:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:33,764 INFO L479 AbstractCegarLoop]: Abstraction has 16348 states and 24748 transitions. [2020-07-21 23:53:33,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:33,765 INFO L276 IsEmpty]: Start isEmpty. Operand 16348 states and 24748 transitions. [2020-07-21 23:53:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 23:53:33,775 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:33,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:33,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:33,976 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:33,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:33,977 INFO L82 PathProgramCache]: Analyzing trace with hash 974019521, now seen corresponding path program 1 times [2020-07-21 23:53:33,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:33,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383881960] [2020-07-21 23:53:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:34,316 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:53:34,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:34,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:34,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:34,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:34,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383881960] [2020-07-21 23:53:34,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:34,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:34,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928771117] [2020-07-21 23:53:34,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:34,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:34,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:34,571 INFO L87 Difference]: Start difference. First operand 16348 states and 24748 transitions. Second operand 3 states. [2020-07-21 23:53:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:35,938 INFO L93 Difference]: Finished difference Result 44346 states and 66764 transitions. [2020-07-21 23:53:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:35,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-21 23:53:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:35,985 INFO L225 Difference]: With dead ends: 44346 [2020-07-21 23:53:35,986 INFO L226 Difference]: Without dead ends: 30520 [2020-07-21 23:53:36,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30520 states. [2020-07-21 23:53:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30520 to 30423. [2020-07-21 23:53:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30423 states. [2020-07-21 23:53:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 45687 transitions. [2020-07-21 23:53:37,580 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 45687 transitions. Word has length 335 [2020-07-21 23:53:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:37,581 INFO L479 AbstractCegarLoop]: Abstraction has 30423 states and 45687 transitions. [2020-07-21 23:53:37,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:53:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 45687 transitions. [2020-07-21 23:53:37,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 23:53:37,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:37,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:37,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:37,816 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:37,817 INFO L82 PathProgramCache]: Analyzing trace with hash 399736853, now seen corresponding path program 1 times [2020-07-21 23:53:37,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:37,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873307166] [2020-07-21 23:53:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:38,139 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:53:38,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:38,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:53:38,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:38,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:38,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873307166] [2020-07-21 23:53:38,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:38,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:53:38,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958920247] [2020-07-21 23:53:38,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:53:38,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:38,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:53:38,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:53:38,477 INFO L87 Difference]: Start difference. First operand 30423 states and 45687 transitions. Second operand 5 states. [2020-07-21 23:53:40,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:40,391 INFO L93 Difference]: Finished difference Result 52787 states and 79246 transitions. [2020-07-21 23:53:40,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:53:40,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-07-21 23:53:40,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:40,433 INFO L225 Difference]: With dead ends: 52787 [2020-07-21 23:53:40,434 INFO L226 Difference]: Without dead ends: 30423 [2020-07-21 23:53:40,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:53:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30423 states. [2020-07-21 23:53:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30423 to 30423. [2020-07-21 23:53:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30423 states. [2020-07-21 23:53:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 45357 transitions. [2020-07-21 23:53:42,192 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 45357 transitions. Word has length 336 [2020-07-21 23:53:42,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:42,192 INFO L479 AbstractCegarLoop]: Abstraction has 30423 states and 45357 transitions. [2020-07-21 23:53:42,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:53:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 45357 transitions. [2020-07-21 23:53:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 23:53:42,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:42,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:42,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:42,431 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:42,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash -47782950, now seen corresponding path program 1 times [2020-07-21 23:53:42,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:42,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960603983] [2020-07-21 23:53:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:42,749 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:53:42,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:42,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:53:42,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:42,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:42,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960603983] [2020-07-21 23:53:42,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:42,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:53:42,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298681979] [2020-07-21 23:53:42,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:53:42,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:42,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:53:42,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:53:42,870 INFO L87 Difference]: Start difference. First operand 30423 states and 45357 transitions. Second operand 4 states. [2020-07-21 23:53:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:46,942 INFO L93 Difference]: Finished difference Result 87733 states and 130661 transitions. [2020-07-21 23:53:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:53:46,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-21 23:53:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:47,010 INFO L225 Difference]: With dead ends: 87733 [2020-07-21 23:53:47,011 INFO L226 Difference]: Without dead ends: 57856 [2020-07-21 23:53:47,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:53:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57856 states. [2020-07-21 23:53:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57856 to 57782. [2020-07-21 23:53:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57782 states. [2020-07-21 23:53:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57782 states to 57782 states and 85564 transitions. [2020-07-21 23:53:50,241 INFO L78 Accepts]: Start accepts. Automaton has 57782 states and 85564 transitions. Word has length 336 [2020-07-21 23:53:50,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:53:50,241 INFO L479 AbstractCegarLoop]: Abstraction has 57782 states and 85564 transitions. [2020-07-21 23:53:50,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:53:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 57782 states and 85564 transitions. [2020-07-21 23:53:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-21 23:53:50,280 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:53:50,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:53:50,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:50,481 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:53:50,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:53:50,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1580338063, now seen corresponding path program 1 times [2020-07-21 23:53:50,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:53:50,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143575572] [2020-07-21 23:53:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:53:50,769 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:53:50,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:53:50,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:53:50,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:53:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:53:50,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:53:50,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143575572] [2020-07-21 23:53:50,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:53:50,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:53:50,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927781687] [2020-07-21 23:53:50,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:53:50,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:53:50,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:53:50,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:53:50,833 INFO L87 Difference]: Start difference. First operand 57782 states and 85564 transitions. Second operand 3 states. [2020-07-21 23:53:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:53:57,462 INFO L93 Difference]: Finished difference Result 161867 states and 238616 transitions. [2020-07-21 23:53:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:53:57,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 337 [2020-07-21 23:53:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:53:57,595 INFO L225 Difference]: With dead ends: 161867 [2020-07-21 23:53:57,596 INFO L226 Difference]: Without dead ends: 109465 [2020-07-21 23:53:57,649 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 23:53:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109465 states. [2020-07-21 23:54:03,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109465 to 58485. [2020-07-21 23:54:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58485 states. [2020-07-21 23:54:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58485 states to 58485 states and 86331 transitions. [2020-07-21 23:54:03,117 INFO L78 Accepts]: Start accepts. Automaton has 58485 states and 86331 transitions. Word has length 337 [2020-07-21 23:54:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:54:03,117 INFO L479 AbstractCegarLoop]: Abstraction has 58485 states and 86331 transitions. [2020-07-21 23:54:03,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:54:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 58485 states and 86331 transitions. [2020-07-21 23:54:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-21 23:54:03,150 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:54:03,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:54:03,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:03,351 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:54:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:54:03,352 INFO L82 PathProgramCache]: Analyzing trace with hash -510440838, now seen corresponding path program 1 times [2020-07-21 23:54:03,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:54:03,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823644661] [2020-07-21 23:54:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:03,667 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:54:03,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:54:03,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:54:03,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:54:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:54:03,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:54:03,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823644661] [2020-07-21 23:54:03,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:54:03,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:54:03,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930586263] [2020-07-21 23:54:03,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:54:03,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:54:03,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:54:03,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:54:03,772 INFO L87 Difference]: Start difference. First operand 58485 states and 86331 transitions. Second operand 3 states. [2020-07-21 23:54:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:54:11,497 INFO L93 Difference]: Finished difference Result 166433 states and 244929 transitions. [2020-07-21 23:54:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:54:11,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-21 23:54:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:54:11,631 INFO L225 Difference]: With dead ends: 166433 [2020-07-21 23:54:11,631 INFO L226 Difference]: Without dead ends: 113274 [2020-07-21 23:54:11,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:54:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113274 states. [2020-07-21 23:54:18,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113274 to 113187. [2020-07-21 23:54:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113187 states. [2020-07-21 23:54:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113187 states to 113187 states and 165631 transitions. [2020-07-21 23:54:18,632 INFO L78 Accepts]: Start accepts. Automaton has 113187 states and 165631 transitions. Word has length 338 [2020-07-21 23:54:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:54:18,632 INFO L479 AbstractCegarLoop]: Abstraction has 113187 states and 165631 transitions. [2020-07-21 23:54:18,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:54:18,632 INFO L276 IsEmpty]: Start isEmpty. Operand 113187 states and 165631 transitions. [2020-07-21 23:54:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-21 23:54:18,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:54:18,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:54:18,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:18,899 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:54:18,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:54:18,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1049649648, now seen corresponding path program 1 times [2020-07-21 23:54:18,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:54:18,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917576239] [2020-07-21 23:54:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:19,183 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:54:19,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:54:19,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:54:19,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:54:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:54:19,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:54:19,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917576239] [2020-07-21 23:54:19,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:54:19,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:54:19,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267232452] [2020-07-21 23:54:19,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:54:19,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:54:19,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:54:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:54:19,247 INFO L87 Difference]: Start difference. First operand 113187 states and 165631 transitions. Second operand 4 states. [2020-07-21 23:54:28,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:54:28,148 INFO L93 Difference]: Finished difference Result 213623 states and 312069 transitions. [2020-07-21 23:54:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:54:28,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2020-07-21 23:54:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:54:28,283 INFO L225 Difference]: With dead ends: 213623 [2020-07-21 23:54:28,283 INFO L226 Difference]: Without dead ends: 108923 [2020-07-21 23:54:28,366 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 23:54:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108923 states. [2020-07-21 23:54:34,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108923 to 108231. [2020-07-21 23:54:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108231 states. [2020-07-21 23:54:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108231 states to 108231 states and 158511 transitions. [2020-07-21 23:54:35,483 INFO L78 Accepts]: Start accepts. Automaton has 108231 states and 158511 transitions. Word has length 339 [2020-07-21 23:54:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:54:35,483 INFO L479 AbstractCegarLoop]: Abstraction has 108231 states and 158511 transitions. [2020-07-21 23:54:35,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:54:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 108231 states and 158511 transitions. [2020-07-21 23:54:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 23:54:35,539 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:54:35,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:54:35,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:35,740 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:54:35,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:54:35,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1984758997, now seen corresponding path program 1 times [2020-07-21 23:54:35,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:54:35,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002008989] [2020-07-21 23:54:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:36,023 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:54:36,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:54:36,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:54:36,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:54:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:54:36,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:54:36,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002008989] [2020-07-21 23:54:36,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:54:36,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:54:36,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793487094] [2020-07-21 23:54:36,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:54:36,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:54:36,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:54:36,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:54:36,094 INFO L87 Difference]: Start difference. First operand 108231 states and 158511 transitions. Second operand 4 states. [2020-07-21 23:54:45,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:54:45,849 INFO L93 Difference]: Finished difference Result 232107 states and 338799 transitions. [2020-07-21 23:54:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:54:45,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-21 23:54:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:54:45,991 INFO L225 Difference]: With dead ends: 232107 [2020-07-21 23:54:45,991 INFO L226 Difference]: Without dead ends: 117880 [2020-07-21 23:54:46,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:54:46,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117880 states. [2020-07-21 23:54:55,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117880 to 117634. [2020-07-21 23:54:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117634 states. [2020-07-21 23:54:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117634 states to 117634 states and 170846 transitions. [2020-07-21 23:54:55,626 INFO L78 Accepts]: Start accepts. Automaton has 117634 states and 170846 transitions. Word has length 340 [2020-07-21 23:54:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:54:55,627 INFO L479 AbstractCegarLoop]: Abstraction has 117634 states and 170846 transitions. [2020-07-21 23:54:55,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:54:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 117634 states and 170846 transitions. [2020-07-21 23:54:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-21 23:54:55,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:54:55,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:54:55,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:55,907 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:54:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:54:55,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1221603206, now seen corresponding path program 1 times [2020-07-21 23:54:55,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:54:55,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701047171] [2020-07-21 23:54:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:54:56,220 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:54:56,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:54:56,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:54:56,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:54:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:54:56,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:54:56,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701047171] [2020-07-21 23:54:56,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:54:56,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:54:56,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82090912] [2020-07-21 23:54:56,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:54:56,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:54:56,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:54:56,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:54:56,347 INFO L87 Difference]: Start difference. First operand 117634 states and 170846 transitions. Second operand 3 states. [2020-07-21 23:55:10,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:55:10,331 INFO L93 Difference]: Finished difference Result 320447 states and 462661 transitions. [2020-07-21 23:55:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:55:10,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2020-07-21 23:55:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:55:10,622 INFO L225 Difference]: With dead ends: 320447 [2020-07-21 23:55:10,622 INFO L226 Difference]: Without dead ends: 220871 [2020-07-21 23:55:10,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:55:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220871 states. [2020-07-21 23:55:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220871 to 220215. [2020-07-21 23:55:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220215 states. [2020-07-21 23:55:28,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220215 states to 220215 states and 317611 transitions. [2020-07-21 23:55:28,731 INFO L78 Accepts]: Start accepts. Automaton has 220215 states and 317611 transitions. Word has length 341 [2020-07-21 23:55:28,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:55:28,731 INFO L479 AbstractCegarLoop]: Abstraction has 220215 states and 317611 transitions. [2020-07-21 23:55:28,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:55:28,731 INFO L276 IsEmpty]: Start isEmpty. Operand 220215 states and 317611 transitions. [2020-07-21 23:55:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-21 23:55:28,859 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:55:28,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:55:29,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:55:29,060 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:55:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:55:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1742808744, now seen corresponding path program 1 times [2020-07-21 23:55:29,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:55:29,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893382005] [2020-07-21 23:55:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:55:29,346 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:55:29,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:55:29,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:55:29,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:55:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:55:29,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:55:29,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893382005] [2020-07-21 23:55:29,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:55:29,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:55:29,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922842351] [2020-07-21 23:55:29,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:55:29,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:55:29,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:55:29,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:55:29,422 INFO L87 Difference]: Start difference. First operand 220215 states and 317611 transitions. Second operand 3 states. [2020-07-21 23:55:56,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:55:56,803 INFO L93 Difference]: Finished difference Result 569705 states and 820667 transitions. [2020-07-21 23:55:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:55:56,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 342 [2020-07-21 23:55:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:55:57,289 INFO L225 Difference]: With dead ends: 569705 [2020-07-21 23:55:57,289 INFO L226 Difference]: Without dead ends: 364313 [2020-07-21 23:55:57,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:55:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364313 states. [2020-07-21 23:56:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364313 to 220476. [2020-07-21 23:56:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220476 states. [2020-07-21 23:56:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220476 states to 220476 states and 317474 transitions. [2020-07-21 23:56:19,662 INFO L78 Accepts]: Start accepts. Automaton has 220476 states and 317474 transitions. Word has length 342 [2020-07-21 23:56:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:56:19,663 INFO L479 AbstractCegarLoop]: Abstraction has 220476 states and 317474 transitions. [2020-07-21 23:56:19,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:56:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 220476 states and 317474 transitions. [2020-07-21 23:56:19,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 23:56:19,820 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:56:19,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:56:20,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:56:20,032 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:56:20,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:56:20,033 INFO L82 PathProgramCache]: Analyzing trace with hash -2089231950, now seen corresponding path program 1 times [2020-07-21 23:56:20,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:56:20,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118747259] [2020-07-21 23:56:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:56:20,318 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:56:20,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:56:20,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:56:20,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:56:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:56:20,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:56:20,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118747259] [2020-07-21 23:56:20,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:56:20,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:56:20,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932707475] [2020-07-21 23:56:20,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:56:20,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:56:20,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:56:20,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:56:20,382 INFO L87 Difference]: Start difference. First operand 220476 states and 317474 transitions. Second operand 3 states. [2020-07-21 23:56:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:56:42,714 INFO L93 Difference]: Finished difference Result 383772 states and 552579 transitions. [2020-07-21 23:56:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:56:42,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2020-07-21 23:56:42,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:56:43,094 INFO L225 Difference]: With dead ends: 383772 [2020-07-21 23:56:43,094 INFO L226 Difference]: Without dead ends: 299708 [2020-07-21 23:56:43,191 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 23:56:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299708 states. [2020-07-21 23:57:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299708 to 220476. [2020-07-21 23:57:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220476 states. [2020-07-21 23:57:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220476 states to 220476 states and 317438 transitions. [2020-07-21 23:57:06,954 INFO L78 Accepts]: Start accepts. Automaton has 220476 states and 317438 transitions. Word has length 343 [2020-07-21 23:57:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:57:06,954 INFO L479 AbstractCegarLoop]: Abstraction has 220476 states and 317438 transitions. [2020-07-21 23:57:06,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:57:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 220476 states and 317438 transitions. [2020-07-21 23:57:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 23:57:07,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:57:07,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:57:07,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:57:07,287 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:57:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:57:07,288 INFO L82 PathProgramCache]: Analyzing trace with hash -49337893, now seen corresponding path program 1 times [2020-07-21 23:57:07,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:57:07,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104235390] [2020-07-21 23:57:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:57:07,573 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 23:57:07,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:57:07,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:57:07,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:57:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:57:07,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:57:07,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104235390] [2020-07-21 23:57:07,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:57:07,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:57:07,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615372258] [2020-07-21 23:57:07,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:57:07,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:57:07,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:57:07,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:57:07,652 INFO L87 Difference]: Start difference. First operand 220476 states and 317438 transitions. Second operand 4 states. [2020-07-21 23:57:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:57:34,697 INFO L93 Difference]: Finished difference Result 503958 states and 724537 transitions. [2020-07-21 23:57:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:57:34,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 343 [2020-07-21 23:57:34,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:57:35,137 INFO L225 Difference]: With dead ends: 503958 [2020-07-21 23:57:35,138 INFO L226 Difference]: Without dead ends: 334373 [2020-07-21 23:57:35,294 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 23:57:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334373 states. [2020-07-21 23:58:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334373 to 221824. [2020-07-21 23:58:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221824 states. [2020-07-21 23:58:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221824 states to 221824 states and 319692 transitions. [2020-07-21 23:58:00,746 INFO L78 Accepts]: Start accepts. Automaton has 221824 states and 319692 transitions. Word has length 343 [2020-07-21 23:58:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:58:00,746 INFO L479 AbstractCegarLoop]: Abstraction has 221824 states and 319692 transitions. [2020-07-21 23:58:00,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:58:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 221824 states and 319692 transitions. [2020-07-21 23:58:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-07-21 23:58:00,897 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:58:00,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:58:01,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:58:01,110 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:58:01,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:58:01,111 INFO L82 PathProgramCache]: Analyzing trace with hash 271766215, now seen corresponding path program 1 times [2020-07-21 23:58:01,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:58:01,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342558105] [2020-07-21 23:58:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:58:01,428 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:58:01,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:58:01,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:58:01,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:58:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:58:01,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:58:01,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342558105] [2020-07-21 23:58:01,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:58:01,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:58:01,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586888387] [2020-07-21 23:58:01,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:58:01,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:58:01,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:58:01,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:58:01,518 INFO L87 Difference]: Start difference. First operand 221824 states and 319692 transitions. Second operand 3 states. [2020-07-21 23:58:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:58:32,631 INFO L93 Difference]: Finished difference Result 611011 states and 878999 transitions. [2020-07-21 23:58:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:58:32,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 344 [2020-07-21 23:58:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:58:33,294 INFO L225 Difference]: With dead ends: 611011 [2020-07-21 23:58:33,295 INFO L226 Difference]: Without dead ends: 419759 [2020-07-21 23:58:33,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:58:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419759 states. [2020-07-21 23:59:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419759 to 419701. [2020-07-21 23:59:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419701 states. [2020-07-21 23:59:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419701 states to 419701 states and 600225 transitions. [2020-07-21 23:59:18,094 INFO L78 Accepts]: Start accepts. Automaton has 419701 states and 600225 transitions. Word has length 344 [2020-07-21 23:59:18,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:59:18,094 INFO L479 AbstractCegarLoop]: Abstraction has 419701 states and 600225 transitions. [2020-07-21 23:59:18,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:59:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 419701 states and 600225 transitions. [2020-07-21 23:59:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-07-21 23:59:18,342 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:59:18,343 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] [2020-07-21 23:59:18,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:59:18,556 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:59:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:59:18,557 INFO L82 PathProgramCache]: Analyzing trace with hash -617353460, now seen corresponding path program 1 times [2020-07-21 23:59:18,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:59:18,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704342445] [2020-07-21 23:59:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:59:18,865 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:59:18,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:59:18,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:59:18,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:59:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:59:19,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:59:19,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704342445] [2020-07-21 23:59:19,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:59:19,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:59:19,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724388650] [2020-07-21 23:59:19,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:59:19,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:59:19,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:59:19,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:59:19,677 INFO L87 Difference]: Start difference. First operand 419701 states and 600225 transitions. Second operand 4 states. [2020-07-22 00:00:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 00:00:26,794 INFO L93 Difference]: Finished difference Result 1220561 states and 1741343 transitions. [2020-07-22 00:00:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-22 00:00:26,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 345 [2020-07-22 00:00:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 00:00:28,139 INFO L225 Difference]: With dead ends: 1220561 [2020-07-22 00:00:28,139 INFO L226 Difference]: Without dead ends: 803049 [2020-07-22 00:00:28,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-22 00:00:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803049 states. [2020-07-22 00:02:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803049 to 802363. [2020-07-22 00:02:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802363 states. [2020-07-22 00:02:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802363 states to 802363 states and 1136664 transitions. [2020-07-22 00:02:02,138 INFO L78 Accepts]: Start accepts. Automaton has 802363 states and 1136664 transitions. Word has length 345 [2020-07-22 00:02:02,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 00:02:02,138 INFO L479 AbstractCegarLoop]: Abstraction has 802363 states and 1136664 transitions. [2020-07-22 00:02:02,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-22 00:02:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand 802363 states and 1136664 transitions. [2020-07-22 00:02:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-07-22 00:02:02,653 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 00:02:02,654 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] [2020-07-22 00:02:02,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 00:02:02,861 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 00:02:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 00:02:02,862 INFO L82 PathProgramCache]: Analyzing trace with hash -286694571, now seen corresponding path program 1 times [2020-07-22 00:02:02,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 00:02:02,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91383371] [2020-07-22 00:02:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 00:02:03,141 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 00:02:03,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 00:02:03,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-22 00:02:03,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 00:02:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 00:02:03,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-22 00:02:03,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91383371] [2020-07-22 00:02:03,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-22 00:02:03,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-22 00:02:03,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322197645] [2020-07-22 00:02:03,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-22 00:02:03,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 00:02:03,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-22 00:02:03,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-22 00:02:03,211 INFO L87 Difference]: Start difference. First operand 802363 states and 1136664 transitions. Second operand 4 states.