/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:59:20,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:59:20,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:59:20,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:59:20,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:59:20,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:59:20,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:59:20,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:59:20,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:59:20,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:59:20,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:59:20,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:59:20,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:59:20,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:59:20,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:59:20,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:59:20,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:59:20,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:59:20,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:59:20,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:59:20,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:59:20,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:59:20,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:59:20,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:59:20,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 14:59:20,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 14:59:20,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 14:59:20,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 14:59:20,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 14:59:20,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 14:59:20,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 14:59:20,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 14:59:20,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 14:59:20,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 14:59:20,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 14:59:20,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 14:59:20,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 14:59:20,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 14:59:20,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:59:20,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:59:20,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:59:20,253 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 14:59:20,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:59:20,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:59:20,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:59:20,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:59:20,278 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:59:20,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:59:20,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:59:20,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:59:20,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:59:20,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:59:20,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:59:20,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:59:20,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:59:20,281 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:59:20,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:59:20,281 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:59:20,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:59:20,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:59:20,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:59:20,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:59:20,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:59:20,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:59:20,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:59:20,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:59:20,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:59:20,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:59:20,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:20,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:59:20,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:59:20,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:59:20,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:59:20,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:59:20,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:59:20,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:59:20,590 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:59:20,591 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-07-20 14:59:20,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d5bf409/cc233bb5fa284929abe5b2bbff8e0d38/FLAG041ece83b [2020-07-20 14:59:21,134 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:59:21,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-07-20 14:59:21,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d5bf409/cc233bb5fa284929abe5b2bbff8e0d38/FLAG041ece83b [2020-07-20 14:59:21,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d5bf409/cc233bb5fa284929abe5b2bbff8e0d38 [2020-07-20 14:59:21,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:59:21,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:59:21,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:59:21,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:59:21,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:59:21,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:59:21" (1/1) ... [2020-07-20 14:59:21,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19eb74fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21, skipping insertion in model container [2020-07-20 14:59:21,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:59:21" (1/1) ... [2020-07-20 14:59:21,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:59:21,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:59:21,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:59:21,816 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:59:21,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:59:21,961 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:59:21,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21 WrapperNode [2020-07-20 14:59:21,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:59:21,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:59:21,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:59:21,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:59:21,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21" (1/1) ... [2020-07-20 14:59:21,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21" (1/1) ... [2020-07-20 14:59:21,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21" (1/1) ... [2020-07-20 14:59:21,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21" (1/1) ... [2020-07-20 14:59:21,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21" (1/1) ... [2020-07-20 14:59:22,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21" (1/1) ... [2020-07-20 14:59:22,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21" (1/1) ... [2020-07-20 14:59:22,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:59:22,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:59:22,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:59:22,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:59:22,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21" (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 14:59:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:59:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:59:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-07-20 14:59:22,082 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-07-20 14:59:22,082 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-07-20 14:59:22,082 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-07-20 14:59:22,082 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-07-20 14:59:22,083 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-07-20 14:59:22,083 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-07-20 14:59:22,083 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-07-20 14:59:22,084 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-07-20 14:59:22,084 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-07-20 14:59:22,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-07-20 14:59:22,085 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-07-20 14:59:22,085 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-07-20 14:59:22,085 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-07-20 14:59:22,086 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-07-20 14:59:22,086 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-07-20 14:59:22,086 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-07-20 14:59:22,086 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-07-20 14:59:22,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:59:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:59:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-07-20 14:59:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-07-20 14:59:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-07-20 14:59:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-07-20 14:59:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:59:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-07-20 14:59:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-07-20 14:59:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-07-20 14:59:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-07-20 14:59:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-07-20 14:59:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-07-20 14:59:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-07-20 14:59:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-07-20 14:59:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-07-20 14:59:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-07-20 14:59:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-07-20 14:59:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-07-20 14:59:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-07-20 14:59:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-07-20 14:59:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:59:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:59:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:59:22,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:59:22,507 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 14:59:22,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:59:22 BoogieIcfgContainer [2020-07-20 14:59:22,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:59:22,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:59:22,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:59:22,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:59:22,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:59:21" (1/3) ... [2020-07-20 14:59:22,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbac205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:59:22, skipping insertion in model container [2020-07-20 14:59:22,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:59:21" (2/3) ... [2020-07-20 14:59:22,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbac205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:59:22, skipping insertion in model container [2020-07-20 14:59:22,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:59:22" (3/3) ... [2020-07-20 14:59:22,520 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2020-07-20 14:59:22,530 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:59:22,537 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:59:22,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:59:22,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:59:22,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:59:22,576 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:59:22,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:59:22,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:59:22,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:59:22,577 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:59:22,577 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:59:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-07-20 14:59:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 14:59:22,608 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:22,609 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] [2020-07-20 14:59:22,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:22,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:22,616 INFO L82 PathProgramCache]: Analyzing trace with hash -540085109, now seen corresponding path program 1 times [2020-07-20 14:59:22,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:22,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399555348] [2020-07-20 14:59:22,625 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 14:59:22,863 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:59:22,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:22,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:59:22,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:22,967 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 14:59:22,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:22,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399555348] [2020-07-20 14:59:22,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:22,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:59:22,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440813802] [2020-07-20 14:59:22,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:59:22,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:22,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:59:22,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:59:22,994 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2020-07-20 14:59:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:23,089 INFO L93 Difference]: Finished difference Result 402 states and 576 transitions. [2020-07-20 14:59:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:59:23,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-07-20 14:59:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:23,109 INFO L225 Difference]: With dead ends: 402 [2020-07-20 14:59:23,110 INFO L226 Difference]: Without dead ends: 257 [2020-07-20 14:59:23,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 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 14:59:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-07-20 14:59:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 251. [2020-07-20 14:59:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-07-20 14:59:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 338 transitions. [2020-07-20 14:59:23,207 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 338 transitions. Word has length 78 [2020-07-20 14:59:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:23,208 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 338 transitions. [2020-07-20 14:59:23,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:59:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 338 transitions. [2020-07-20 14:59:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 14:59:23,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:23,213 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] [2020-07-20 14:59:23,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:23,429 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:23,431 INFO L82 PathProgramCache]: Analyzing trace with hash -16764438, now seen corresponding path program 1 times [2020-07-20 14:59:23,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:23,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933629263] [2020-07-20 14:59:23,432 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 14:59:23,537 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:59:23,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:23,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 14:59:23,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:23,603 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 14:59:23,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:23,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933629263] [2020-07-20 14:59:23,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:23,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:59:23,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251841294] [2020-07-20 14:59:23,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:59:23,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:23,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:59:23,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:59:23,610 INFO L87 Difference]: Start difference. First operand 251 states and 338 transitions. Second operand 5 states. [2020-07-20 14:59:24,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:24,080 INFO L93 Difference]: Finished difference Result 591 states and 839 transitions. [2020-07-20 14:59:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:59:24,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-07-20 14:59:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:24,085 INFO L225 Difference]: With dead ends: 591 [2020-07-20 14:59:24,086 INFO L226 Difference]: Without dead ends: 359 [2020-07-20 14:59:24,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 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 14:59:24,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-07-20 14:59:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 299. [2020-07-20 14:59:24,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-07-20 14:59:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 387 transitions. [2020-07-20 14:59:24,128 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 387 transitions. Word has length 78 [2020-07-20 14:59:24,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:24,129 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 387 transitions. [2020-07-20 14:59:24,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:59:24,129 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 387 transitions. [2020-07-20 14:59:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 14:59:24,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:24,132 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] [2020-07-20 14:59:24,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:24,348 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:24,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:24,348 INFO L82 PathProgramCache]: Analyzing trace with hash 999803178, now seen corresponding path program 1 times [2020-07-20 14:59:24,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:24,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779149165] [2020-07-20 14:59:24,349 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 14:59:24,466 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:59:24,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:24,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 14:59:24,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:24,563 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 14:59:24,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:24,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779149165] [2020-07-20 14:59:24,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:24,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:59:24,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232242652] [2020-07-20 14:59:24,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:59:24,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:24,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:59:24,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:59:24,567 INFO L87 Difference]: Start difference. First operand 299 states and 387 transitions. Second operand 5 states. [2020-07-20 14:59:25,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:25,168 INFO L93 Difference]: Finished difference Result 889 states and 1176 transitions. [2020-07-20 14:59:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:59:25,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-07-20 14:59:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:25,180 INFO L225 Difference]: With dead ends: 889 [2020-07-20 14:59:25,180 INFO L226 Difference]: Without dead ends: 609 [2020-07-20 14:59:25,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:59:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-07-20 14:59:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 559. [2020-07-20 14:59:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-07-20 14:59:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 724 transitions. [2020-07-20 14:59:25,240 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 724 transitions. Word has length 78 [2020-07-20 14:59:25,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:25,240 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 724 transitions. [2020-07-20 14:59:25,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:59:25,240 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 724 transitions. [2020-07-20 14:59:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 14:59:25,242 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:25,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:59:25,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:25,458 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:25,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1751247338, now seen corresponding path program 1 times [2020-07-20 14:59:25,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:25,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818506660] [2020-07-20 14:59:25,460 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 14:59:25,526 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:59:25,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:25,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 14:59:25,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:25,583 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 14:59:25,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:25,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818506660] [2020-07-20 14:59:25,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:25,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:59:25,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394669070] [2020-07-20 14:59:25,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:59:25,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:25,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:59:25,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:59:25,586 INFO L87 Difference]: Start difference. First operand 559 states and 724 transitions. Second operand 5 states. [2020-07-20 14:59:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:25,917 INFO L93 Difference]: Finished difference Result 1099 states and 1441 transitions. [2020-07-20 14:59:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:59:25,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-07-20 14:59:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:25,921 INFO L225 Difference]: With dead ends: 1099 [2020-07-20 14:59:25,921 INFO L226 Difference]: Without dead ends: 559 [2020-07-20 14:59:25,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 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 14:59:25,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-07-20 14:59:25,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-07-20 14:59:25,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-07-20 14:59:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 712 transitions. [2020-07-20 14:59:25,956 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 712 transitions. Word has length 78 [2020-07-20 14:59:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:25,957 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 712 transitions. [2020-07-20 14:59:25,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:59:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 712 transitions. [2020-07-20 14:59:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 14:59:25,959 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:25,959 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] [2020-07-20 14:59:26,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:26,173 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash -579817174, now seen corresponding path program 1 times [2020-07-20 14:59:26,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:26,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472824547] [2020-07-20 14:59:26,176 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 14:59:26,240 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:59:26,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:26,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:59:26,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:26,274 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 14:59:26,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:26,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472824547] [2020-07-20 14:59:26,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:26,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 14:59:26,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762272609] [2020-07-20 14:59:26,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:59:26,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:26,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:59:26,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:59:26,277 INFO L87 Difference]: Start difference. First operand 559 states and 712 transitions. Second operand 6 states. [2020-07-20 14:59:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:26,334 INFO L93 Difference]: Finished difference Result 1112 states and 1446 transitions. [2020-07-20 14:59:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:59:26,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-07-20 14:59:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:26,338 INFO L225 Difference]: With dead ends: 1112 [2020-07-20 14:59:26,338 INFO L226 Difference]: Without dead ends: 573 [2020-07-20 14:59:26,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 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 14:59:26,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-07-20 14:59:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 569. [2020-07-20 14:59:26,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-07-20 14:59:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 716 transitions. [2020-07-20 14:59:26,396 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 716 transitions. Word has length 78 [2020-07-20 14:59:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:26,397 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 716 transitions. [2020-07-20 14:59:26,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:59:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 716 transitions. [2020-07-20 14:59:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 14:59:26,402 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:26,402 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] [2020-07-20 14:59:26,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:26,603 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:26,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:26,604 INFO L82 PathProgramCache]: Analyzing trace with hash -305057560, now seen corresponding path program 1 times [2020-07-20 14:59:26,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:26,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281462599] [2020-07-20 14:59:26,605 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 14:59:26,668 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:59:26,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:26,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:59:26,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:26,701 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 14:59:26,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:26,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281462599] [2020-07-20 14:59:26,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:26,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 14:59:26,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263953819] [2020-07-20 14:59:26,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:59:26,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:26,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:59:26,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:59:26,703 INFO L87 Difference]: Start difference. First operand 569 states and 716 transitions. Second operand 6 states. [2020-07-20 14:59:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:26,761 INFO L93 Difference]: Finished difference Result 1202 states and 1547 transitions. [2020-07-20 14:59:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:59:26,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-07-20 14:59:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:26,766 INFO L225 Difference]: With dead ends: 1202 [2020-07-20 14:59:26,767 INFO L226 Difference]: Without dead ends: 653 [2020-07-20 14:59:26,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 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 14:59:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-07-20 14:59:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 609. [2020-07-20 14:59:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-07-20 14:59:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 756 transitions. [2020-07-20 14:59:26,810 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 756 transitions. Word has length 78 [2020-07-20 14:59:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:26,812 INFO L479 AbstractCegarLoop]: Abstraction has 609 states and 756 transitions. [2020-07-20 14:59:26,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:59:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 756 transitions. [2020-07-20 14:59:26,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 14:59:26,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:26,816 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] [2020-07-20 14:59:27,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:27,032 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:27,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:27,033 INFO L82 PathProgramCache]: Analyzing trace with hash 118589162, now seen corresponding path program 1 times [2020-07-20 14:59:27,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:27,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435322916] [2020-07-20 14:59:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:59:27,103 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:59:27,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:27,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 14:59:27,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:27,151 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 14:59:27,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:27,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435322916] [2020-07-20 14:59:27,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:27,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:59:27,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556906765] [2020-07-20 14:59:27,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:59:27,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:27,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:59:27,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:59:27,154 INFO L87 Difference]: Start difference. First operand 609 states and 756 transitions. Second operand 5 states. [2020-07-20 14:59:27,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:27,607 INFO L93 Difference]: Finished difference Result 1308 states and 1704 transitions. [2020-07-20 14:59:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:59:27,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-07-20 14:59:27,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:27,613 INFO L225 Difference]: With dead ends: 1308 [2020-07-20 14:59:27,613 INFO L226 Difference]: Without dead ends: 718 [2020-07-20 14:59:27,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:59:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-07-20 14:59:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 633. [2020-07-20 14:59:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-07-20 14:59:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 758 transitions. [2020-07-20 14:59:27,655 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 758 transitions. Word has length 78 [2020-07-20 14:59:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:27,656 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 758 transitions. [2020-07-20 14:59:27,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:59:27,656 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 758 transitions. [2020-07-20 14:59:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 14:59:27,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:27,657 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] [2020-07-20 14:59:27,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:27,872 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:27,873 INFO L82 PathProgramCache]: Analyzing trace with hash 180628776, now seen corresponding path program 1 times [2020-07-20 14:59:27,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:27,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20713716] [2020-07-20 14:59:27,873 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 14:59:27,942 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:59:27,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:27,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 14:59:27,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:27,971 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 14:59:27,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:27,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20713716] [2020-07-20 14:59:27,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:27,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:59:27,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777983359] [2020-07-20 14:59:27,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:59:27,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:27,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:59:27,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:59:27,973 INFO L87 Difference]: Start difference. First operand 633 states and 758 transitions. Second operand 3 states. [2020-07-20 14:59:28,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:28,038 INFO L93 Difference]: Finished difference Result 1802 states and 2202 transitions. [2020-07-20 14:59:28,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:59:28,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-07-20 14:59:28,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:28,045 INFO L225 Difference]: With dead ends: 1802 [2020-07-20 14:59:28,045 INFO L226 Difference]: Without dead ends: 1189 [2020-07-20 14:59:28,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 14:59:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-07-20 14:59:28,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1185. [2020-07-20 14:59:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2020-07-20 14:59:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1398 transitions. [2020-07-20 14:59:28,107 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1398 transitions. Word has length 78 [2020-07-20 14:59:28,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:28,107 INFO L479 AbstractCegarLoop]: Abstraction has 1185 states and 1398 transitions. [2020-07-20 14:59:28,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:59:28,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1398 transitions. [2020-07-20 14:59:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-20 14:59:28,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:28,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:59:28,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:28,324 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:28,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:28,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1319133239, now seen corresponding path program 1 times [2020-07-20 14:59:28,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:28,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983394447] [2020-07-20 14:59:28,327 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 14:59:28,367 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 14:59:28,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:28,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:59:28,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-20 14:59:28,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:28,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983394447] [2020-07-20 14:59:28,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:28,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:59:28,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380239293] [2020-07-20 14:59:28,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:59:28,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:59:28,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:59:28,393 INFO L87 Difference]: Start difference. First operand 1185 states and 1398 transitions. Second operand 3 states. [2020-07-20 14:59:28,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:28,518 INFO L93 Difference]: Finished difference Result 2946 states and 3527 transitions. [2020-07-20 14:59:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:59:28,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-07-20 14:59:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:28,528 INFO L225 Difference]: With dead ends: 2946 [2020-07-20 14:59:28,528 INFO L226 Difference]: Without dead ends: 1364 [2020-07-20 14:59:28,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 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 14:59:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-07-20 14:59:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2020-07-20 14:59:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2020-07-20 14:59:28,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1603 transitions. [2020-07-20 14:59:28,617 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1603 transitions. Word has length 123 [2020-07-20 14:59:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:28,620 INFO L479 AbstractCegarLoop]: Abstraction has 1364 states and 1603 transitions. [2020-07-20 14:59:28,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:59:28,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1603 transitions. [2020-07-20 14:59:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-07-20 14:59:28,631 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:28,632 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:59:28,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:28,848 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:28,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1249606409, now seen corresponding path program 1 times [2020-07-20 14:59:28,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:28,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335582064] [2020-07-20 14:59:28,849 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 14:59:28,977 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:59:28,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:28,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:59:28,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-20 14:59:29,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:29,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335582064] [2020-07-20 14:59:29,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:29,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:59:29,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689429424] [2020-07-20 14:59:29,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:59:29,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:29,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:59:29,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:59:29,032 INFO L87 Difference]: Start difference. First operand 1364 states and 1603 transitions. Second operand 3 states. [2020-07-20 14:59:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:29,116 INFO L93 Difference]: Finished difference Result 2701 states and 3220 transitions. [2020-07-20 14:59:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:59:29,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-07-20 14:59:29,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:29,124 INFO L225 Difference]: With dead ends: 2701 [2020-07-20 14:59:29,124 INFO L226 Difference]: Without dead ends: 1358 [2020-07-20 14:59:29,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 174 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 14:59:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2020-07-20 14:59:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1358. [2020-07-20 14:59:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-07-20 14:59:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1579 transitions. [2020-07-20 14:59:29,198 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1579 transitions. Word has length 176 [2020-07-20 14:59:29,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:29,198 INFO L479 AbstractCegarLoop]: Abstraction has 1358 states and 1579 transitions. [2020-07-20 14:59:29,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:59:29,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1579 transitions. [2020-07-20 14:59:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-07-20 14:59:29,202 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:29,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:59:29,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:29,416 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:29,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:29,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1366701111, now seen corresponding path program 1 times [2020-07-20 14:59:29,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:29,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437468553] [2020-07-20 14:59:29,419 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 14:59:29,473 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 14:59:29,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:29,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:59:29,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-20 14:59:29,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:29,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437468553] [2020-07-20 14:59:29,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:29,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:59:29,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259595712] [2020-07-20 14:59:29,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:59:29,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:29,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:59:29,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:59:29,529 INFO L87 Difference]: Start difference. First operand 1358 states and 1579 transitions. Second operand 3 states. [2020-07-20 14:59:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:29,631 INFO L93 Difference]: Finished difference Result 3153 states and 3700 transitions. [2020-07-20 14:59:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:59:29,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-07-20 14:59:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:29,638 INFO L225 Difference]: With dead ends: 3153 [2020-07-20 14:59:29,638 INFO L226 Difference]: Without dead ends: 911 [2020-07-20 14:59:29,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 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 14:59:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-07-20 14:59:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2020-07-20 14:59:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-07-20 14:59:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1038 transitions. [2020-07-20 14:59:29,731 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1038 transitions. Word has length 177 [2020-07-20 14:59:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:29,732 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1038 transitions. [2020-07-20 14:59:29,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:59:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1038 transitions. [2020-07-20 14:59:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-07-20 14:59:29,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:29,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:59:29,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:29,952 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash -816293866, now seen corresponding path program 1 times [2020-07-20 14:59:29,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:29,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825188193] [2020-07-20 14:59:29,954 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 14:59:30,116 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:59:30,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:30,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:59:30,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:30,157 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-07-20 14:59:30,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:30,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825188193] [2020-07-20 14:59:30,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:30,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:59:30,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607798169] [2020-07-20 14:59:30,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:59:30,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:30,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:59:30,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:59:30,160 INFO L87 Difference]: Start difference. First operand 911 states and 1038 transitions. Second operand 3 states. [2020-07-20 14:59:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:30,217 INFO L93 Difference]: Finished difference Result 1624 states and 1886 transitions. [2020-07-20 14:59:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:59:30,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-07-20 14:59:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:30,222 INFO L225 Difference]: With dead ends: 1624 [2020-07-20 14:59:30,222 INFO L226 Difference]: Without dead ends: 911 [2020-07-20 14:59:30,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 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 14:59:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-07-20 14:59:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2020-07-20 14:59:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-07-20 14:59:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1030 transitions. [2020-07-20 14:59:30,307 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1030 transitions. Word has length 177 [2020-07-20 14:59:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:30,308 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1030 transitions. [2020-07-20 14:59:30,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:59:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1030 transitions. [2020-07-20 14:59:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-07-20 14:59:30,311 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:30,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:59:30,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:30,526 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:30,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:30,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2053123678, now seen corresponding path program 1 times [2020-07-20 14:59:30,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:30,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816895785] [2020-07-20 14:59:30,527 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 14:59:30,684 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:59:30,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:30,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-20 14:59:30,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 53 proven. 23 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-20 14:59:30,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:59:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 14:59:30,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816895785] [2020-07-20 14:59:30,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 14:59:30,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2020-07-20 14:59:30,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157161517] [2020-07-20 14:59:30,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:59:30,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:30,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:59:30,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:59:30,937 INFO L87 Difference]: Start difference. First operand 911 states and 1030 transitions. Second operand 6 states. [2020-07-20 14:59:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:31,442 INFO L93 Difference]: Finished difference Result 937 states and 1063 transitions. [2020-07-20 14:59:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:59:31,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-07-20 14:59:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:31,458 INFO L225 Difference]: With dead ends: 937 [2020-07-20 14:59:31,458 INFO L226 Difference]: Without dead ends: 934 [2020-07-20 14:59:31,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:59:31,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-07-20 14:59:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 928. [2020-07-20 14:59:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-07-20 14:59:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1051 transitions. [2020-07-20 14:59:31,517 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1051 transitions. Word has length 178 [2020-07-20 14:59:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:31,517 INFO L479 AbstractCegarLoop]: Abstraction has 928 states and 1051 transitions. [2020-07-20 14:59:31,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:59:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1051 transitions. [2020-07-20 14:59:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-20 14:59:31,521 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:31,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:59:31,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:31,735 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:31,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:31,736 INFO L82 PathProgramCache]: Analyzing trace with hash 5197958, now seen corresponding path program 1 times [2020-07-20 14:59:31,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:31,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90851122] [2020-07-20 14:59:31,737 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 14:59:31,877 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:59:31,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:59:31,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:59:31,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:59:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-07-20 14:59:31,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:59:31,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90851122] [2020-07-20 14:59:31,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:59:31,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:59:31,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101593779] [2020-07-20 14:59:31,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:59:31,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:59:31,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:59:31,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:59:31,911 INFO L87 Difference]: Start difference. First operand 928 states and 1051 transitions. Second operand 3 states. [2020-07-20 14:59:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:59:31,963 INFO L93 Difference]: Finished difference Result 1501 states and 1713 transitions. [2020-07-20 14:59:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:59:31,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-07-20 14:59:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:59:31,968 INFO L225 Difference]: With dead ends: 1501 [2020-07-20 14:59:31,969 INFO L226 Difference]: Without dead ends: 942 [2020-07-20 14:59:31,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 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 14:59:31,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2020-07-20 14:59:32,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2020-07-20 14:59:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-07-20 14:59:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1067 transitions. [2020-07-20 14:59:32,026 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1067 transitions. Word has length 182 [2020-07-20 14:59:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:59:32,027 INFO L479 AbstractCegarLoop]: Abstraction has 942 states and 1067 transitions. [2020-07-20 14:59:32,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:59:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1067 transitions. [2020-07-20 14:59:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-07-20 14:59:32,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:59:32,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:59:32,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:32,245 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:59:32,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:59:32,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1390323253, now seen corresponding path program 1 times [2020-07-20 14:59:32,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:59:32,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955373960] [2020-07-20 14:59:32,246 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 14:59:32,369 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:59:32,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 14:59:32,369 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 14:59:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 14:59:32,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 14:59:32,567 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 14:59:32,567 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 14:59:32,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:59:32,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:59:32 BoogieIcfgContainer [2020-07-20 14:59:32,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:59:32,964 INFO L168 Benchmark]: Toolchain (without parser) took 11421.61 ms. Allocated memory was 137.9 MB in the beginning and 362.8 MB in the end (delta: 224.9 MB). Free memory was 101.3 MB in the beginning and 96.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 229.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:59:32,968 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 14:59:32,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.84 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 179.8 MB in the end (delta: -79.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-07-20 14:59:32,971 INFO L168 Benchmark]: Boogie Preprocessor took 49.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 177.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:59:32,971 INFO L168 Benchmark]: RCFGBuilder took 500.12 ms. Allocated memory is still 201.3 MB. Free memory was 177.3 MB in the beginning and 144.8 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-07-20 14:59:32,972 INFO L168 Benchmark]: TraceAbstraction took 10446.53 ms. Allocated memory was 201.3 MB in the beginning and 362.8 MB in the end (delta: 161.5 MB). Free memory was 144.8 MB in the beginning and 96.7 MB in the end (delta: 48.1 MB). Peak memory consumption was 209.6 MB. Max. memory is 7.1 GB. [2020-07-20 14:59:32,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 417.84 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 179.8 MB in the end (delta: -79.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 177.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.12 ms. Allocated memory is still 201.3 MB. Free memory was 177.3 MB in the beginning and 144.8 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10446.53 ms. Allocated memory was 201.3 MB in the beginning and 362.8 MB in the end (delta: 161.5 MB). Free memory was 144.8 MB in the beginning and 96.7 MB in the end (delta: 48.1 MB). Peak memory consumption was 209.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int m_pc = 0; [L15] int t1_pc = 0; [L16] int m_st ; [L17] int t1_st ; [L18] int m_i ; [L19] int t1_i ; [L20] int M_E = 2; [L21] int T1_E = 2; [L22] int E_M = 2; [L23] int E_1 = 2; [L27] int token ; [L29] int local ; VAL [\old(E_1)=8, \old(E_M)=9, \old(local)=13, \old(M_E)=14, \old(m_i)=15, \old(m_pc)=10, \old(m_st)=4, \old(T1_E)=12, \old(t1_i)=6, \old(t1_pc)=3, \old(t1_st)=7, \old(token)=11, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] [L475] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] [L479] CALL init_model() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] [L390] m_i = 1 [L391] t1_i = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L479] RET init_model() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L480] CALL start_simulation() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L416] int kernel_st ; [L417] int tmp ; [L418] int tmp___0 ; [L422] kernel_st = 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L423] FCALL update_channels() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L424] CALL init_threads() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L172] COND TRUE m_i == 1 [L173] m_st = 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L177] COND TRUE t1_i == 1 [L178] t1_st = 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L424] RET init_threads() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L425] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L261] COND FALSE !(M_E == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L266] COND FALSE !(T1_E == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L271] COND FALSE !(E_M == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L276] COND FALSE !(E_1 == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L425] RET fire_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L426] CALL activate_threads() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L314] int tmp ; [L315] int tmp___0 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L319] CALL, EXPR is_master_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L123] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L126] COND FALSE !(m_pc == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L136] __retres1 = 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L138] return (__retres1); VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, \result=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L319] RET, EXPR is_master_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, is_master_triggered()=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=0, token=0] [L327] CALL, EXPR is_transmit1_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L142] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L145] COND FALSE !(t1_pc == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L155] __retres1 = 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L157] return (__retres1); VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, \result=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L327] RET, EXPR is_transmit1_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, is_transmit1_triggered()=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=0, token=0] [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=0, tmp___0=0, token=0] [L426] RET activate_threads() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L427] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L289] COND FALSE !(M_E == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L294] COND FALSE !(T1_E == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L299] COND FALSE !(E_M == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L304] COND FALSE !(E_1 == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L427] RET reset_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L430] COND TRUE 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L433] kernel_st = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, kernel_st=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L434] CALL eval() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L208] int tmp ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L212] COND TRUE 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L215] CALL, EXPR exists_runnable_thread() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L187] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, __retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L203] return (__retres1); VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, \result=1, __retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L215] RET, EXPR exists_runnable_thread() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND FALSE !(\read(tmp_ndt_1)) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0, token=0] [L236] COND TRUE t1_st == 0 [L237] int tmp_ndt_2; [L238] tmp_ndt_2 = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp_ndt_2) [L241] t1_st = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L242] CALL transmit1() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=1, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, token=0] [L90] COND TRUE t1_pc == 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=1, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, token=0] [L101] COND TRUE 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=1, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, token=0] [L103] t1_pc = 1 [L104] t1_st = 2 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=1, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L242] RET transmit1() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L212] COND TRUE 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L215] CALL, EXPR exists_runnable_thread() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L187] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, __retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L203] return (__retres1); VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, \result=1, __retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L215] RET, EXPR exists_runnable_thread() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp_ndt_1) [L227] m_st = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-1, token=0] [L228] CALL master() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND TRUE m_pc == 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L45] COND TRUE 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L48] token = __VERIFIER_nondet_int() [L49] local = token [L50] E_1 = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=-1] [L51] CALL immediate_notify() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L343] CALL activate_threads() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L314] int tmp ; [L315] int tmp___0 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L319] CALL, EXPR is_master_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L123] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L126] COND FALSE !(m_pc == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L136] __retres1 = 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, __retres1=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L138] return (__retres1); VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, \result=0, __retres1=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L319] RET, EXPR is_master_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, is_master_triggered()=0, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=0, token=-1] [L327] CALL, EXPR is_transmit1_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L142] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L145] COND TRUE t1_pc == 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L146] COND TRUE E_1 == 1 [L147] __retres1 = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, __retres1=1, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L157] return (__retres1); VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, \result=1, __retres1=1, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=-1] [L327] RET, EXPR is_transmit1_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, is_transmit1_triggered()=1, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=0, token=-1] [L327] tmp___0 = is_transmit1_triggered() [L329] COND TRUE \read(tmp___0) [L330] t1_st = 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp=0, tmp___0=1, token=-1] [L343] RET activate_threads() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, token=-1] [L51] RET immediate_notify() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=1, E_M=2, local=-1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=-1] [L52] E_1 = 2 [L53] m_pc = 1 [L54] m_st = 2 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=-1] [L228] RET master() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-1, token=-1] [L236] COND TRUE t1_st == 0 [L237] int tmp_ndt_2; [L238] tmp_ndt_2 = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp_ndt_2) [L241] t1_st = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-1, token=-1] [L242] CALL transmit1() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=-1] [L90] COND FALSE !(t1_pc == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=-1] [L93] COND TRUE t1_pc == 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=-1] [L109] token += 1 [L110] E_M = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L111] CALL immediate_notify() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L343] CALL activate_threads() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L314] int tmp ; [L315] int tmp___0 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L319] CALL, EXPR is_master_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L123] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L126] COND TRUE m_pc == 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L127] COND TRUE E_M == 1 [L128] __retres1 = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, __retres1=1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L138] return (__retres1); VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, \result=1, __retres1=1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L319] RET, EXPR is_master_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, is_master_triggered()=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L319] tmp = is_master_triggered() [L321] COND TRUE \read(tmp) [L322] m_st = 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, tmp=1, token=0] [L327] CALL, EXPR is_transmit1_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L142] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L145] COND TRUE t1_pc == 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L146] COND FALSE !(E_1 == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L155] __retres1 = 0 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, __retres1=0, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L157] return (__retres1); VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, \result=0, __retres1=0, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L327] RET, EXPR is_transmit1_triggered() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, is_transmit1_triggered()=0, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, tmp=1, token=0] [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, tmp=1, tmp___0=0, token=0] [L343] RET activate_threads() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L111] RET immediate_notify() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L112] E_M = 2 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L101] COND TRUE 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L103] t1_pc = 1 [L104] t1_st = 2 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=2, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=1, \old(t1_st)=1, \old(token)=-1, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L242] RET transmit1() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-1, token=0] [L212] COND TRUE 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-1, token=0] [L215] CALL, EXPR exists_runnable_thread() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L187] int __retres1 ; VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, __retres1=1, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L203] return (__retres1); VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, \result=1, __retres1=1, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L215] RET, EXPR exists_runnable_thread() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, exists_runnable_thread()=1, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-1, token=0] [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-1, token=0] [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp_ndt_1) [L227] m_st = 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=0, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=0, \old(m_st)=0, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=0, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-1, token=0] [L228] CALL master() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND FALSE !(m_pc == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=0] [L37] COND TRUE m_pc == 1 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=0] [L59] COND FALSE !(token != local + 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=0] [L64] COND TRUE tmp_var <= 5 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=0] [L65] COND TRUE tmp_var >= 5 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=0] [L70] COND TRUE tmp_var <= 5 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=0] [L71] COND TRUE tmp_var >= 5 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=0] [L72] COND TRUE tmp_var == 5 VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=0] [L73] CALL error() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L10] __VERIFIER_error() VAL [\old(E_1)=2, \old(E_M)=2, \old(local)=-1, \old(M_E)=2, \old(m_i)=0, \old(m_pc)=1, \old(m_st)=1, \old(T1_E)=2, \old(t1_i)=0, \old(t1_pc)=0, \old(t1_st)=2, \old(token)=0, E_1=2, E_M=2, local=-1, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.2s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2968 SDtfs, 2379 SDslu, 2965 SDs, 0 SdLazy, 1375 SolverSat, 561 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1811 GetRequests, 1768 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1364occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 259 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1820 NumberOfCodeBlocks, 1400 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1800 ConstructedInterpolants, 0 QuantifiedInterpolants, 356313 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5617 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 649/672 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...