/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:58:32,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:58:32,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:58:32,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:58:32,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:58:32,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:58:32,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:58:32,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:58:32,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:58:32,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:58:32,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:58:32,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:58:32,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:58:32,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:58:32,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:58:32,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:58:32,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:58:32,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:58:32,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:58:32,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:58:32,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:58:32,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:58:32,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:58:32,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:58:32,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 22:58:32,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 22:58:32,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 22:58:32,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 22:58:32,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 22:58:32,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 22:58:32,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 22:58:32,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 22:58:32,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 22:58:32,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 22:58:32,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 22:58:32,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 22:58:32,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 22:58:32,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 22:58:32,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:58:32,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:58:32,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:58:32,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 22:58:32,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:58:32,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:58:32,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:58:32,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:58:32,531 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:58:32,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:58:32,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:58:32,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:58:32,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:58:32,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:58:32,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:58:32,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:58:32,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:58:32,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:58:32,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:58:32,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:58:32,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:58:32,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:58:32,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:58:32,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:58:32,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:58:32,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:58:32,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:58:32,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:58:32,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:58:32,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:58:32,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:32,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:58:32,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:58:32,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:58:32,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:58:32,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:58:32,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:58:32,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:58:32,890 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:58:32,890 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.15.cil.c [2020-07-20 22:58:32,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a4d83945/df91f20e2cc445aabfab9371ac8f5575/FLAG906192fee [2020-07-20 22:58:33,584 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:58:33,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.15.cil.c [2020-07-20 22:58:33,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a4d83945/df91f20e2cc445aabfab9371ac8f5575/FLAG906192fee [2020-07-20 22:58:33,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a4d83945/df91f20e2cc445aabfab9371ac8f5575 [2020-07-20 22:58:33,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:58:33,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:58:33,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:58:33,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:58:33,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:58:33,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:58:33" (1/1) ... [2020-07-20 22:58:33,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509fad81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:33, skipping insertion in model container [2020-07-20 22:58:33,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:58:33" (1/1) ... [2020-07-20 22:58:33,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:58:33,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:58:34,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:58:34,300 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:58:34,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:58:34,551 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:58:34,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34 WrapperNode [2020-07-20 22:58:34,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:58:34,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:58:34,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:58:34,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:58:34,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34" (1/1) ... [2020-07-20 22:58:34,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34" (1/1) ... [2020-07-20 22:58:34,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34" (1/1) ... [2020-07-20 22:58:34,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34" (1/1) ... [2020-07-20 22:58:34,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34" (1/1) ... [2020-07-20 22:58:34,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34" (1/1) ... [2020-07-20 22:58:34,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34" (1/1) ... [2020-07-20 22:58:34,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:58:34,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:58:34,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:58:34,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:58:34,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:58:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:58:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:58:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-07-20 22:58:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-07-20 22:58:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-07-20 22:58:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-07-20 22:58:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2020-07-20 22:58:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2020-07-20 22:58:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2020-07-20 22:58:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2020-07-20 22:58:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2020-07-20 22:58:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2020-07-20 22:58:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2020-07-20 22:58:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2020-07-20 22:58:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit11 [2020-07-20 22:58:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit12 [2020-07-20 22:58:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit13 [2020-07-20 22:58:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-07-20 22:58:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-07-20 22:58:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-07-20 22:58:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2020-07-20 22:58:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2020-07-20 22:58:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2020-07-20 22:58:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2020-07-20 22:58:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2020-07-20 22:58:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2020-07-20 22:58:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2020-07-20 22:58:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2020-07-20 22:58:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit11_triggered [2020-07-20 22:58:34,752 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit12_triggered [2020-07-20 22:58:34,752 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit13_triggered [2020-07-20 22:58:34,752 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-07-20 22:58:34,752 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-07-20 22:58:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-07-20 22:58:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-07-20 22:58:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-07-20 22:58:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-07-20 22:58:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-07-20 22:58:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-07-20 22:58:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-07-20 22:58:34,754 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-07-20 22:58:34,754 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-07-20 22:58:34,754 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-07-20 22:58:34,754 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-07-20 22:58:34,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:58:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:58:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:58:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-07-20 22:58:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-07-20 22:58:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-07-20 22:58:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-07-20 22:58:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2020-07-20 22:58:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2020-07-20 22:58:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2020-07-20 22:58:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2020-07-20 22:58:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2020-07-20 22:58:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2020-07-20 22:58:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2020-07-20 22:58:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2020-07-20 22:58:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit11_triggered [2020-07-20 22:58:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit12_triggered [2020-07-20 22:58:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit13_triggered [2020-07-20 22:58:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-07-20 22:58:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-07-20 22:58:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-07-20 22:58:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-07-20 22:58:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2020-07-20 22:58:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2020-07-20 22:58:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2020-07-20 22:58:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2020-07-20 22:58:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2020-07-20 22:58:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2020-07-20 22:58:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2020-07-20 22:58:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2020-07-20 22:58:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure transmit11 [2020-07-20 22:58:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure transmit12 [2020-07-20 22:58:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure transmit13 [2020-07-20 22:58:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-07-20 22:58:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-07-20 22:58:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-07-20 22:58:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-07-20 22:58:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-07-20 22:58:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-07-20 22:58:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-07-20 22:58:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-07-20 22:58:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-07-20 22:58:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-07-20 22:58:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-07-20 22:58:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-07-20 22:58:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:58:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:58:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:58:36,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:58:36,033 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-07-20 22:58:36,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:58:36 BoogieIcfgContainer [2020-07-20 22:58:36,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:58:36,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:58:36,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:58:36,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:58:36,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:58:33" (1/3) ... [2020-07-20 22:58:36,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c8a213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:58:36, skipping insertion in model container [2020-07-20 22:58:36,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:58:34" (2/3) ... [2020-07-20 22:58:36,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c8a213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:58:36, skipping insertion in model container [2020-07-20 22:58:36,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:58:36" (3/3) ... [2020-07-20 22:58:36,051 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.15.cil.c [2020-07-20 22:58:36,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:58:36,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:58:36,091 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:58:36,123 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:58:36,123 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:58:36,124 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:58:36,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:58:36,124 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:58:36,124 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:58:36,124 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:58:36,124 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:58:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states. [2020-07-20 22:58:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-07-20 22:58:36,179 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:36,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:58:36,182 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:36,190 INFO L82 PathProgramCache]: Analyzing trace with hash 754746292, now seen corresponding path program 1 times [2020-07-20 22:58:36,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:36,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430503664] [2020-07-20 22:58:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:36,472 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 22:58:36,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:36,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:58:36,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:36,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:36,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430503664] [2020-07-20 22:58:36,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:36,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:36,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354342726] [2020-07-20 22:58:36,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:36,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:36,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:36,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:36,683 INFO L87 Difference]: Start difference. First operand 499 states. Second operand 3 states. [2020-07-20 22:58:36,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:36,804 INFO L93 Difference]: Finished difference Result 981 states and 1523 transitions. [2020-07-20 22:58:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:36,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-07-20 22:58:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:36,843 INFO L225 Difference]: With dead ends: 981 [2020-07-20 22:58:36,843 INFO L226 Difference]: Without dead ends: 490 [2020-07-20 22:58:36,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-07-20 22:58:36,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-07-20 22:58:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-07-20 22:58:36,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 718 transitions. [2020-07-20 22:58:36,967 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 718 transitions. Word has length 240 [2020-07-20 22:58:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:36,969 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 718 transitions. [2020-07-20 22:58:36,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:58:36,970 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 718 transitions. [2020-07-20 22:58:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-07-20 22:58:36,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:36,976 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] [2020-07-20 22:58:37,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:37,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash -332213258, now seen corresponding path program 1 times [2020-07-20 22:58:37,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:37,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750073639] [2020-07-20 22:58:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:37,391 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 22:58:37,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:37,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:58:37,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:37,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:37,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750073639] [2020-07-20 22:58:37,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:37,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:37,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489187616] [2020-07-20 22:58:37,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:37,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:37,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:37,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:37,533 INFO L87 Difference]: Start difference. First operand 490 states and 718 transitions. Second operand 3 states. [2020-07-20 22:58:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:37,578 INFO L93 Difference]: Finished difference Result 957 states and 1404 transitions. [2020-07-20 22:58:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:37,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-07-20 22:58:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:37,583 INFO L225 Difference]: With dead ends: 957 [2020-07-20 22:58:37,584 INFO L226 Difference]: Without dead ends: 490 [2020-07-20 22:58:37,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:37,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-07-20 22:58:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-07-20 22:58:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-07-20 22:58:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 717 transitions. [2020-07-20 22:58:37,650 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 717 transitions. Word has length 240 [2020-07-20 22:58:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:37,651 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 717 transitions. [2020-07-20 22:58:37,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:58:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 717 transitions. [2020-07-20 22:58:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-07-20 22:58:37,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:37,660 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] [2020-07-20 22:58:37,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:37,872 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:37,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:37,873 INFO L82 PathProgramCache]: Analyzing trace with hash -275347912, now seen corresponding path program 1 times [2020-07-20 22:58:37,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:37,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934571826] [2020-07-20 22:58:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:38,072 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:58:38,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:38,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:58:38,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:38,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:38,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934571826] [2020-07-20 22:58:38,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:38,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:38,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086484122] [2020-07-20 22:58:38,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:38,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:38,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:38,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:38,193 INFO L87 Difference]: Start difference. First operand 490 states and 717 transitions. Second operand 3 states. [2020-07-20 22:58:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:38,286 INFO L93 Difference]: Finished difference Result 1382 states and 2054 transitions. [2020-07-20 22:58:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:38,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-07-20 22:58:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:38,297 INFO L225 Difference]: With dead ends: 1382 [2020-07-20 22:58:38,298 INFO L226 Difference]: Without dead ends: 925 [2020-07-20 22:58:38,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-07-20 22:58:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 919. [2020-07-20 22:58:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-07-20 22:58:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1373 transitions. [2020-07-20 22:58:38,366 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1373 transitions. Word has length 240 [2020-07-20 22:58:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:38,367 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1373 transitions. [2020-07-20 22:58:38,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:58:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1373 transitions. [2020-07-20 22:58:38,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:58:38,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:38,372 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] [2020-07-20 22:58:38,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:38,586 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:38,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:38,587 INFO L82 PathProgramCache]: Analyzing trace with hash -210493631, now seen corresponding path program 1 times [2020-07-20 22:58:38,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:38,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508514596] [2020-07-20 22:58:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:38,771 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:58:38,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:38,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 22:58:38,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:38,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:38,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508514596] [2020-07-20 22:58:38,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:38,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 22:58:38,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69785566] [2020-07-20 22:58:38,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:58:38,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:38,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:58:38,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:58:38,906 INFO L87 Difference]: Start difference. First operand 919 states and 1373 transitions. Second operand 6 states. [2020-07-20 22:58:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:39,035 INFO L93 Difference]: Finished difference Result 1857 states and 2842 transitions. [2020-07-20 22:58:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:58:39,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2020-07-20 22:58:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:39,058 INFO L225 Difference]: With dead ends: 1857 [2020-07-20 22:58:39,058 INFO L226 Difference]: Without dead ends: 970 [2020-07-20 22:58:39,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:58:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-07-20 22:58:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-07-20 22:58:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-07-20 22:58:39,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1453 transitions. [2020-07-20 22:58:39,163 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1453 transitions. Word has length 241 [2020-07-20 22:58:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:39,165 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1453 transitions. [2020-07-20 22:58:39,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:58:39,166 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1453 transitions. [2020-07-20 22:58:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:58:39,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:39,172 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] [2020-07-20 22:58:39,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:39,387 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:39,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:39,387 INFO L82 PathProgramCache]: Analyzing trace with hash -120433341, now seen corresponding path program 1 times [2020-07-20 22:58:39,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:39,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727319410] [2020-07-20 22:58:39,388 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:39,703 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:58:39,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:39,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:58:39,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:39,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:39,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727319410] [2020-07-20 22:58:39,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:39,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:39,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319040571] [2020-07-20 22:58:39,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:39,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:39,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:39,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:39,848 INFO L87 Difference]: Start difference. First operand 970 states and 1453 transitions. Second operand 3 states. [2020-07-20 22:58:39,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:39,949 INFO L93 Difference]: Finished difference Result 2833 states and 4342 transitions. [2020-07-20 22:58:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:39,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-07-20 22:58:39,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:39,965 INFO L225 Difference]: With dead ends: 2833 [2020-07-20 22:58:39,965 INFO L226 Difference]: Without dead ends: 1895 [2020-07-20 22:58:39,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-07-20 22:58:40,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1888. [2020-07-20 22:58:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-07-20 22:58:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2834 transitions. [2020-07-20 22:58:40,085 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2834 transitions. Word has length 241 [2020-07-20 22:58:40,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:40,086 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2834 transitions. [2020-07-20 22:58:40,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:58:40,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2834 transitions. [2020-07-20 22:58:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:58:40,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:40,092 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] [2020-07-20 22:58:40,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:40,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:40,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1545954850, now seen corresponding path program 1 times [2020-07-20 22:58:40,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:40,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530718088] [2020-07-20 22:58:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:40,591 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:58:40,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:40,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:58:40,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:40,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:40,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530718088] [2020-07-20 22:58:40,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:40,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:40,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911240498] [2020-07-20 22:58:40,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:40,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:40,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:40,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:40,753 INFO L87 Difference]: Start difference. First operand 1888 states and 2834 transitions. Second operand 3 states. [2020-07-20 22:58:40,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:40,959 INFO L93 Difference]: Finished difference Result 5575 states and 8566 transitions. [2020-07-20 22:58:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:40,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-07-20 22:58:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:40,999 INFO L225 Difference]: With dead ends: 5575 [2020-07-20 22:58:40,999 INFO L226 Difference]: Without dead ends: 3719 [2020-07-20 22:58:41,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-07-20 22:58:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3708. [2020-07-20 22:58:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3708 states. [2020-07-20 22:58:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 5580 transitions. [2020-07-20 22:58:41,232 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 5580 transitions. Word has length 241 [2020-07-20 22:58:41,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:41,233 INFO L479 AbstractCegarLoop]: Abstraction has 3708 states and 5580 transitions. [2020-07-20 22:58:41,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:58:41,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 5580 transitions. [2020-07-20 22:58:41,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:58:41,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:41,239 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] [2020-07-20 22:58:41,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:41,455 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:41,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1746386751, now seen corresponding path program 1 times [2020-07-20 22:58:41,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:41,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403186969] [2020-07-20 22:58:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:41,729 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:58:41,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:41,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:58:41,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:41,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:41,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403186969] [2020-07-20 22:58:41,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:41,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:41,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060461669] [2020-07-20 22:58:41,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:41,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:41,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:41,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:41,867 INFO L87 Difference]: Start difference. First operand 3708 states and 5580 transitions. Second operand 3 states. [2020-07-20 22:58:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:42,116 INFO L93 Difference]: Finished difference Result 11011 states and 16976 transitions. [2020-07-20 22:58:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:42,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-07-20 22:58:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:42,171 INFO L225 Difference]: With dead ends: 11011 [2020-07-20 22:58:42,172 INFO L226 Difference]: Without dead ends: 7335 [2020-07-20 22:58:42,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7335 states. [2020-07-20 22:58:42,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7335 to 7316. [2020-07-20 22:58:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7316 states. [2020-07-20 22:58:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 11048 transitions. [2020-07-20 22:58:42,578 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 11048 transitions. Word has length 241 [2020-07-20 22:58:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:42,579 INFO L479 AbstractCegarLoop]: Abstraction has 7316 states and 11048 transitions. [2020-07-20 22:58:42,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:58:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 11048 transitions. [2020-07-20 22:58:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:58:42,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:42,584 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] [2020-07-20 22:58:42,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:42,798 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:42,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:42,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1473391328, now seen corresponding path program 1 times [2020-07-20 22:58:42,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:42,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146524701] [2020-07-20 22:58:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:43,173 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:58:43,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:43,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:58:43,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:43,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:43,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146524701] [2020-07-20 22:58:43,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:43,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:43,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482340419] [2020-07-20 22:58:43,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:43,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:43,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:43,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:43,276 INFO L87 Difference]: Start difference. First operand 7316 states and 11048 transitions. Second operand 3 states. [2020-07-20 22:58:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:43,892 INFO L93 Difference]: Finished difference Result 21787 states and 33760 transitions. [2020-07-20 22:58:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:43,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-07-20 22:58:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:43,980 INFO L225 Difference]: With dead ends: 21787 [2020-07-20 22:58:43,981 INFO L226 Difference]: Without dead ends: 14503 [2020-07-20 22:58:44,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:44,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14503 states. [2020-07-20 22:58:44,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14503 to 14468. [2020-07-20 22:58:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14468 states. [2020-07-20 22:58:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14468 states to 14468 states and 21960 transitions. [2020-07-20 22:58:44,646 INFO L78 Accepts]: Start accepts. Automaton has 14468 states and 21960 transitions. Word has length 241 [2020-07-20 22:58:44,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:44,647 INFO L479 AbstractCegarLoop]: Abstraction has 14468 states and 21960 transitions. [2020-07-20 22:58:44,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:58:44,647 INFO L276 IsEmpty]: Start isEmpty. Operand 14468 states and 21960 transitions. [2020-07-20 22:58:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:58:44,651 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:44,651 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] [2020-07-20 22:58:44,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:44,866 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:44,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:44,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1394273473, now seen corresponding path program 1 times [2020-07-20 22:58:44,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:44,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895239623] [2020-07-20 22:58:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:45,158 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:58:45,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:45,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:58:45,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:45,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:45,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895239623] [2020-07-20 22:58:45,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:45,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:45,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927725609] [2020-07-20 22:58:45,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:45,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:45,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:45,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:45,421 INFO L87 Difference]: Start difference. First operand 14468 states and 21960 transitions. Second operand 3 states. [2020-07-20 22:58:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:46,260 INFO L93 Difference]: Finished difference Result 43147 states and 67376 transitions. [2020-07-20 22:58:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:46,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-07-20 22:58:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:47,297 INFO L225 Difference]: With dead ends: 43147 [2020-07-20 22:58:47,297 INFO L226 Difference]: Without dead ends: 28711 [2020-07-20 22:58:47,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28711 states. [2020-07-20 22:58:48,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28711 to 28644. [2020-07-20 22:58:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28644 states. [2020-07-20 22:58:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28644 states to 28644 states and 43808 transitions. [2020-07-20 22:58:48,691 INFO L78 Accepts]: Start accepts. Automaton has 28644 states and 43808 transitions. Word has length 241 [2020-07-20 22:58:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:48,691 INFO L479 AbstractCegarLoop]: Abstraction has 28644 states and 43808 transitions. [2020-07-20 22:58:48,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:58:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 28644 states and 43808 transitions. [2020-07-20 22:58:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:58:48,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:48,695 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] [2020-07-20 22:58:48,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:48,909 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:48,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1683507200, now seen corresponding path program 1 times [2020-07-20 22:58:48,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:48,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734492319] [2020-07-20 22:58:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:49,202 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:58:49,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:49,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:58:49,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:49,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:49,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734492319] [2020-07-20 22:58:49,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:49,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:49,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813459503] [2020-07-20 22:58:49,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:49,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:49,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:49,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:49,279 INFO L87 Difference]: Start difference. First operand 28644 states and 43808 transitions. Second operand 3 states. [2020-07-20 22:58:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:50,799 INFO L93 Difference]: Finished difference Result 85483 states and 135064 transitions. [2020-07-20 22:58:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:50,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-07-20 22:58:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:58:51,153 INFO L225 Difference]: With dead ends: 85483 [2020-07-20 22:58:51,154 INFO L226 Difference]: Without dead ends: 56871 [2020-07-20 22:58:51,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56871 states. [2020-07-20 22:58:54,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56871 to 56740. [2020-07-20 22:58:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56740 states. [2020-07-20 22:58:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56740 states to 56740 states and 87768 transitions. [2020-07-20 22:58:55,281 INFO L78 Accepts]: Start accepts. Automaton has 56740 states and 87768 transitions. Word has length 241 [2020-07-20 22:58:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:58:55,282 INFO L479 AbstractCegarLoop]: Abstraction has 56740 states and 87768 transitions. [2020-07-20 22:58:55,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:58:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 56740 states and 87768 transitions. [2020-07-20 22:58:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:58:55,286 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:58:55,287 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] [2020-07-20 22:58:55,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:55,500 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:58:55,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:58:55,501 INFO L82 PathProgramCache]: Analyzing trace with hash -473965823, now seen corresponding path program 1 times [2020-07-20 22:58:55,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:58:55,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64881670] [2020-07-20 22:58:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:58:55,779 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:58:55,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:58:55,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:58:55,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:58:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:58:55,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:58:55,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64881670] [2020-07-20 22:58:55,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:58:55,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:58:55,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799132350] [2020-07-20 22:58:55,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:58:55,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:58:55,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:58:55,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:58:55,840 INFO L87 Difference]: Start difference. First operand 56740 states and 87768 transitions. Second operand 3 states. [2020-07-20 22:58:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:58:59,614 INFO L93 Difference]: Finished difference Result 169387 states and 272432 transitions. [2020-07-20 22:58:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:58:59,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-07-20 22:58:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:59:00,245 INFO L225 Difference]: With dead ends: 169387 [2020-07-20 22:59:00,245 INFO L226 Difference]: Without dead ends: 112679 [2020-07-20 22:59:00,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:59:00,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112679 states. [2020-07-20 22:59:06,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112679 to 112420. [2020-07-20 22:59:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112420 states. [2020-07-20 22:59:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112420 states to 112420 states and 176864 transitions. [2020-07-20 22:59:07,434 INFO L78 Accepts]: Start accepts. Automaton has 112420 states and 176864 transitions. Word has length 241 [2020-07-20 22:59:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:59:07,434 INFO L479 AbstractCegarLoop]: Abstraction has 112420 states and 176864 transitions. [2020-07-20 22:59:07,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:59:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 112420 states and 176864 transitions. [2020-07-20 22:59:07,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:59:07,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:59:07,437 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] [2020-07-20 22:59:07,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:59:07,645 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:59:07,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:59:07,646 INFO L82 PathProgramCache]: Analyzing trace with hash 103777090, now seen corresponding path program 1 times [2020-07-20 22:59:07,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:59:07,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421629661] [2020-07-20 22:59:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:59:07,921 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:59:07,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:59:07,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:59:07,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:59:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:59:07,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:59:07,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421629661] [2020-07-20 22:59:07,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:59:07,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:59:07,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607699993] [2020-07-20 22:59:07,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:59:07,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:59:07,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:59:07,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:59:07,999 INFO L87 Difference]: Start difference. First operand 112420 states and 176864 transitions. Second operand 3 states. [2020-07-20 22:59:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:59:15,785 INFO L93 Difference]: Finished difference Result 335659 states and 554392 transitions. [2020-07-20 22:59:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:59:15,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-07-20 22:59:15,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:59:16,751 INFO L225 Difference]: With dead ends: 335659 [2020-07-20 22:59:16,751 INFO L226 Difference]: Without dead ends: 223271 [2020-07-20 22:59:17,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:59:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223271 states. [2020-07-20 22:59:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223271 to 222756. [2020-07-20 22:59:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222756 states. [2020-07-20 22:59:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222756 states to 222756 states and 359352 transitions. [2020-07-20 22:59:30,064 INFO L78 Accepts]: Start accepts. Automaton has 222756 states and 359352 transitions. Word has length 241 [2020-07-20 22:59:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:59:30,065 INFO L479 AbstractCegarLoop]: Abstraction has 222756 states and 359352 transitions. [2020-07-20 22:59:30,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:59:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 222756 states and 359352 transitions. [2020-07-20 22:59:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:59:30,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:59:30,068 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] [2020-07-20 22:59:30,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:59:30,283 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:59:30,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:59:30,283 INFO L82 PathProgramCache]: Analyzing trace with hash 323484995, now seen corresponding path program 1 times [2020-07-20 22:59:30,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:59:30,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276013597] [2020-07-20 22:59:30,284 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:59:35,662 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:59:35,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:59:35,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:59:35,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:59:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:59:35,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:59:35,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276013597] [2020-07-20 22:59:35,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:59:35,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:59:35,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243883953] [2020-07-20 22:59:35,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:59:35,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:59:35,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:59:35,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:59:35,750 INFO L87 Difference]: Start difference. First operand 222756 states and 359352 transitions. Second operand 3 states. [2020-07-20 22:59:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:59:47,799 INFO L93 Difference]: Finished difference Result 665131 states and 1142480 transitions. [2020-07-20 22:59:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:59:47,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-07-20 22:59:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:59:49,539 INFO L225 Difference]: With dead ends: 665131 [2020-07-20 22:59:49,539 INFO L226 Difference]: Without dead ends: 442407 [2020-07-20 23:00:01,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:00:01,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442407 states. [2020-07-20 23:00:25,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442407 to 441380. [2020-07-20 23:00:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441380 states. [2020-07-20 23:00:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441380 states to 441380 states and 738752 transitions. [2020-07-20 23:00:39,354 INFO L78 Accepts]: Start accepts. Automaton has 441380 states and 738752 transitions. Word has length 241 [2020-07-20 23:00:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:00:39,354 INFO L479 AbstractCegarLoop]: Abstraction has 441380 states and 738752 transitions. [2020-07-20 23:00:39,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:00:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 441380 states and 738752 transitions. [2020-07-20 23:00:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 23:00:39,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:00:39,357 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] [2020-07-20 23:00:39,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:00:39,558 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 23:00:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:00:39,558 INFO L82 PathProgramCache]: Analyzing trace with hash 895628386, now seen corresponding path program 1 times [2020-07-20 23:00:39,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:00:39,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716502324] [2020-07-20 23:00:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:00:39,822 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:00:39,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:00:39,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1662 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 23:00:39,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:00:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 23:00:39,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:00:39,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716502324] [2020-07-20 23:00:39,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:00:39,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 23:00:39,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343714997] [2020-07-20 23:00:39,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 23:00:39,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:00:39,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 23:00:39,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:00:39,899 INFO L87 Difference]: Start difference. First operand 441380 states and 738752 transitions. Second operand 5 states. [2020-07-20 23:01:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:01:15,371 INFO L93 Difference]: Finished difference Result 882729 states and 1480533 transitions. [2020-07-20 23:01:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 23:01:15,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-07-20 23:01:15,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:01:17,027 INFO L225 Difference]: With dead ends: 882729 [2020-07-20 23:01:17,027 INFO L226 Difference]: Without dead ends: 441380 [2020-07-20 23:01:30,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 23:01:30,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441380 states. [2020-07-20 23:01:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441380 to 441380. [2020-07-20 23:01:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441380 states. [2020-07-20 23:02:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441380 states to 441380 states and 735680 transitions. [2020-07-20 23:02:07,456 INFO L78 Accepts]: Start accepts. Automaton has 441380 states and 735680 transitions. Word has length 241 [2020-07-20 23:02:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:02:07,456 INFO L479 AbstractCegarLoop]: Abstraction has 441380 states and 735680 transitions. [2020-07-20 23:02:07,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 23:02:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 441380 states and 735680 transitions. [2020-07-20 23:02:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 23:02:07,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:02:07,458 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] [2020-07-20 23:02:07,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:02:07,659 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 23:02:07,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:02:07,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2064232738, now seen corresponding path program 1 times [2020-07-20 23:02:07,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:02:07,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651906366] [2020-07-20 23:02:07,661 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:02:07,936 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:02:07,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:02:07,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 23:02:07,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:02:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 23:02:08,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:02:08,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651906366] [2020-07-20 23:02:08,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:02:08,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 23:02:08,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975786863] [2020-07-20 23:02:08,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 23:02:08,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:02:08,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 23:02:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:02:08,021 INFO L87 Difference]: Start difference. First operand 441380 states and 735680 transitions. Second operand 5 states. [2020-07-20 23:03:01,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:03:01,809 INFO L93 Difference]: Finished difference Result 1003818 states and 1846662 transitions. [2020-07-20 23:03:01,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 23:03:01,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-07-20 23:03:01,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:03:05,793 INFO L225 Difference]: With dead ends: 1003818 [2020-07-20 23:03:05,794 INFO L226 Difference]: Without dead ends: 562469 [2020-07-20 23:03:11,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 23:03:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562469 states. [2020-07-20 23:03:54,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562469 to 529188. [2020-07-20 23:03:54,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529188 states.