/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -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 0.1.25-5644d1e-m [2020-08-19 01:18:21,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:18:21,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:18:21,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:18:21,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:18:21,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:18:21,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:18:21,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:18:21,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:18:21,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:18:21,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:18:21,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:18:21,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:18:21,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:18:21,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:18:21,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:18:21,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:18:21,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:18:21,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:18:21,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:18:21,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:18:21,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:18:21,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:18:21,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:18:21,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:18:21,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:18:21,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:18:21,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:18:21,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:18:21,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:18:21,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:18:21,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:18:21,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:18:21,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:18:21,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:18:21,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:18:21,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:18:21,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:18:21,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:18:21,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:18:21,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:18:21,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:18:21,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:18:21,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:18:21,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:18:21,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:18:21,662 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:18:21,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:18:21,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:18:21,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:18:21,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:18:21,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:18:21,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:18:21,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:18:21,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:18:21,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:18:21,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:18:21,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:18:21,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:18:21,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:18:21,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:18:21,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:18:21,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:18:21,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:18:21,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:18:21,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:18:21,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:18:21,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:18:21,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:18:21,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:18:21,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:18:21,668 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:18:22,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:18:22,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:18:22,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:18:22,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:18:22,046 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:18:22,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-08-19 01:18:22,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9615a8b36/dcee38e4b28d4418b4e209954c575fe0/FLAG5de936358 [2020-08-19 01:18:22,619 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:18:22,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-08-19 01:18:22,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9615a8b36/dcee38e4b28d4418b4e209954c575fe0/FLAG5de936358 [2020-08-19 01:18:22,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9615a8b36/dcee38e4b28d4418b4e209954c575fe0 [2020-08-19 01:18:22,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:18:22,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:18:22,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:18:22,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:18:22,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:18:22,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:18:22" (1/1) ... [2020-08-19 01:18:22,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:22, skipping insertion in model container [2020-08-19 01:18:22,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:18:22" (1/1) ... [2020-08-19 01:18:22,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:18:22,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:18:23,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:18:23,247 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:18:23,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:18:23,466 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:18:23,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23 WrapperNode [2020-08-19 01:18:23,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:18:23,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:18:23,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:18:23,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:18:23,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... [2020-08-19 01:18:23,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:18:23,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:18:23,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:18:23,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:18:23,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 01:18:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:18:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:18:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-19 01:18:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-19 01:18:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-19 01:18:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-19 01:18:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-19 01:18:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-19 01:18:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-19 01:18:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-19 01:18:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-19 01:18:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-19 01:18:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-19 01:18:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-19 01:18:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-19 01:18:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-19 01:18:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-19 01:18:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-19 01:18:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-19 01:18:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-19 01:18:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:18:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:18:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-19 01:18:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-19 01:18:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-19 01:18:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-19 01:18:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:18:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-19 01:18:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-19 01:18:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-19 01:18:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-19 01:18:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-19 01:18:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-19 01:18:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-19 01:18:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-19 01:18:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-19 01:18:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-19 01:18:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-19 01:18:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-19 01:18:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-19 01:18:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-19 01:18:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:18:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:18:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:18:24,149 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:18:24,149 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 01:18:24,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:18:24 BoogieIcfgContainer [2020-08-19 01:18:24,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:18:24,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:18:24,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:18:24,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:18:24,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:18:22" (1/3) ... [2020-08-19 01:18:24,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e9c01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:18:24, skipping insertion in model container [2020-08-19 01:18:24,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:18:23" (2/3) ... [2020-08-19 01:18:24,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e9c01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:18:24, skipping insertion in model container [2020-08-19 01:18:24,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:18:24" (3/3) ... [2020-08-19 01:18:24,164 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2020-08-19 01:18:24,175 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:18:24,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:18:24,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:18:24,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:18:24,223 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:18:24,223 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:18:24,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:18:24,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:18:24,224 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:18:24,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:18:24,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:18:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-08-19 01:18:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:18:24,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:24,258 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] [2020-08-19 01:18:24,259 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:24,264 INFO L82 PathProgramCache]: Analyzing trace with hash -540085109, now seen corresponding path program 1 times [2020-08-19 01:18:24,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:24,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525203284] [2020-08-19 01:18:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:24,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525203284] [2020-08-19 01:18:24,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:24,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:18:24,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382754573] [2020-08-19 01:18:24,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:18:24,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:24,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:18:24,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:18:24,894 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 9 states. [2020-08-19 01:18:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:27,074 INFO L93 Difference]: Finished difference Result 522 states and 794 transitions. [2020-08-19 01:18:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:18:27,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-19 01:18:27,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:27,110 INFO L225 Difference]: With dead ends: 522 [2020-08-19 01:18:27,110 INFO L226 Difference]: Without dead ends: 371 [2020-08-19 01:18:27,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:18:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-08-19 01:18:27,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 257. [2020-08-19 01:18:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-19 01:18:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 346 transitions. [2020-08-19 01:18:27,223 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 346 transitions. Word has length 78 [2020-08-19 01:18:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:27,224 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 346 transitions. [2020-08-19 01:18:27,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:18:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 346 transitions. [2020-08-19 01:18:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:18:27,228 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:27,229 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] [2020-08-19 01:18:27,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:18:27,229 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:27,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:27,230 INFO L82 PathProgramCache]: Analyzing trace with hash 211359051, now seen corresponding path program 1 times [2020-08-19 01:18:27,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:27,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929323056] [2020-08-19 01:18:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:27,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929323056] [2020-08-19 01:18:27,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:27,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:18:27,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066276589] [2020-08-19 01:18:27,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:18:27,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:27,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:18:27,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:18:27,469 INFO L87 Difference]: Start difference. First operand 257 states and 346 transitions. Second operand 10 states. [2020-08-19 01:18:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:28,675 INFO L93 Difference]: Finished difference Result 599 states and 848 transitions. [2020-08-19 01:18:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:18:28,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-19 01:18:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:28,693 INFO L225 Difference]: With dead ends: 599 [2020-08-19 01:18:28,693 INFO L226 Difference]: Without dead ends: 361 [2020-08-19 01:18:28,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:18:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-08-19 01:18:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 257. [2020-08-19 01:18:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-19 01:18:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 339 transitions. [2020-08-19 01:18:28,765 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 339 transitions. Word has length 78 [2020-08-19 01:18:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:28,766 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 339 transitions. [2020-08-19 01:18:28,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:18:28,766 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 339 transitions. [2020-08-19 01:18:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:18:28,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:28,779 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] [2020-08-19 01:18:28,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:18:28,779 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2119705461, now seen corresponding path program 1 times [2020-08-19 01:18:28,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:28,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245419807] [2020-08-19 01:18:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:28,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245419807] [2020-08-19 01:18:28,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:28,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:18:28,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829689196] [2020-08-19 01:18:28,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:18:28,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:28,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:18:28,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:18:28,951 INFO L87 Difference]: Start difference. First operand 257 states and 339 transitions. Second operand 10 states. [2020-08-19 01:18:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:30,384 INFO L93 Difference]: Finished difference Result 722 states and 1058 transitions. [2020-08-19 01:18:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:18:30,384 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-19 01:18:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:30,389 INFO L225 Difference]: With dead ends: 722 [2020-08-19 01:18:30,390 INFO L226 Difference]: Without dead ends: 484 [2020-08-19 01:18:30,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-19 01:18:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-19 01:18:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 309. [2020-08-19 01:18:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-19 01:18:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 392 transitions. [2020-08-19 01:18:30,435 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 392 transitions. Word has length 78 [2020-08-19 01:18:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:30,436 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 392 transitions. [2020-08-19 01:18:30,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:18:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 392 transitions. [2020-08-19 01:18:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:18:30,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:30,438 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] [2020-08-19 01:18:30,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:18:30,439 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash -579817174, now seen corresponding path program 1 times [2020-08-19 01:18:30,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:30,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850062632] [2020-08-19 01:18:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:30,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850062632] [2020-08-19 01:18:30,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:30,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:18:30,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842060712] [2020-08-19 01:18:30,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:18:30,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:30,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:18:30,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:18:30,709 INFO L87 Difference]: Start difference. First operand 309 states and 392 transitions. Second operand 10 states. [2020-08-19 01:18:32,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:32,079 INFO L93 Difference]: Finished difference Result 744 states and 1001 transitions. [2020-08-19 01:18:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:18:32,080 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-19 01:18:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:32,084 INFO L225 Difference]: With dead ends: 744 [2020-08-19 01:18:32,085 INFO L226 Difference]: Without dead ends: 455 [2020-08-19 01:18:32,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:18:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-08-19 01:18:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 329. [2020-08-19 01:18:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-19 01:18:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 412 transitions. [2020-08-19 01:18:32,122 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 412 transitions. Word has length 78 [2020-08-19 01:18:32,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:32,123 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 412 transitions. [2020-08-19 01:18:32,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:18:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 412 transitions. [2020-08-19 01:18:32,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:18:32,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:32,124 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] [2020-08-19 01:18:32,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:18:32,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:32,125 INFO L82 PathProgramCache]: Analyzing trace with hash -156170452, now seen corresponding path program 1 times [2020-08-19 01:18:32,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:32,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818710717] [2020-08-19 01:18:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:32,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818710717] [2020-08-19 01:18:32,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:32,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:18:32,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537864921] [2020-08-19 01:18:32,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:18:32,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:32,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:18:32,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:18:32,380 INFO L87 Difference]: Start difference. First operand 329 states and 412 transitions. Second operand 10 states. [2020-08-19 01:18:33,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:33,780 INFO L93 Difference]: Finished difference Result 774 states and 1027 transitions. [2020-08-19 01:18:33,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:18:33,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-19 01:18:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:33,787 INFO L225 Difference]: With dead ends: 774 [2020-08-19 01:18:33,787 INFO L226 Difference]: Without dead ends: 465 [2020-08-19 01:18:33,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:18:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-08-19 01:18:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 339. [2020-08-19 01:18:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-08-19 01:18:33,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 420 transitions. [2020-08-19 01:18:33,831 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 420 transitions. Word has length 78 [2020-08-19 01:18:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:33,833 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 420 transitions. [2020-08-19 01:18:33,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:18:33,833 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 420 transitions. [2020-08-19 01:18:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:18:33,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:33,835 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] [2020-08-19 01:18:33,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:18:33,836 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:33,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:33,836 INFO L82 PathProgramCache]: Analyzing trace with hash 118589162, now seen corresponding path program 1 times [2020-08-19 01:18:33,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:33,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441047674] [2020-08-19 01:18:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:34,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:34,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441047674] [2020-08-19 01:18:34,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:34,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:18:34,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313396319] [2020-08-19 01:18:34,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:18:34,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:34,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:18:34,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:18:34,033 INFO L87 Difference]: Start difference. First operand 339 states and 420 transitions. Second operand 10 states. [2020-08-19 01:18:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:35,542 INFO L93 Difference]: Finished difference Result 920 states and 1216 transitions. [2020-08-19 01:18:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 01:18:35,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-19 01:18:35,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:35,551 INFO L225 Difference]: With dead ends: 920 [2020-08-19 01:18:35,551 INFO L226 Difference]: Without dead ends: 600 [2020-08-19 01:18:35,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:18:35,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-19 01:18:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 375. [2020-08-19 01:18:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-08-19 01:18:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 445 transitions. [2020-08-19 01:18:35,608 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 445 transitions. Word has length 78 [2020-08-19 01:18:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:35,609 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 445 transitions. [2020-08-19 01:18:35,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:18:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 445 transitions. [2020-08-19 01:18:35,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:18:35,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:35,611 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] [2020-08-19 01:18:35,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:18:35,612 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:35,612 INFO L82 PathProgramCache]: Analyzing trace with hash 180628776, now seen corresponding path program 1 times [2020-08-19 01:18:35,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:35,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218939864] [2020-08-19 01:18:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:18:35,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218939864] [2020-08-19 01:18:35,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:35,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:18:35,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912083291] [2020-08-19 01:18:35,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:18:35,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:35,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:18:35,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:18:35,797 INFO L87 Difference]: Start difference. First operand 375 states and 445 transitions. Second operand 7 states. [2020-08-19 01:18:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:37,015 INFO L93 Difference]: Finished difference Result 1208 states and 1535 transitions. [2020-08-19 01:18:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:18:37,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-19 01:18:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:37,023 INFO L225 Difference]: With dead ends: 1208 [2020-08-19 01:18:37,023 INFO L226 Difference]: Without dead ends: 853 [2020-08-19 01:18:37,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:18:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-19 01:18:37,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 751. [2020-08-19 01:18:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-08-19 01:18:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 921 transitions. [2020-08-19 01:18:37,105 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 921 transitions. Word has length 78 [2020-08-19 01:18:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:37,105 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 921 transitions. [2020-08-19 01:18:37,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:18:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 921 transitions. [2020-08-19 01:18:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-19 01:18:37,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:37,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:18:37,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:18:37,109 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:37,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:37,109 INFO L82 PathProgramCache]: Analyzing trace with hash 972462964, now seen corresponding path program 1 times [2020-08-19 01:18:37,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:37,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462457822] [2020-08-19 01:18:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 01:18:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:18:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 01:18:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-19 01:18:37,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462457822] [2020-08-19 01:18:37,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:18:37,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 01:18:37,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292828301] [2020-08-19 01:18:37,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:18:37,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:37,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:18:37,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:18:37,342 INFO L87 Difference]: Start difference. First operand 751 states and 921 transitions. Second operand 9 states. [2020-08-19 01:18:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:39,169 INFO L93 Difference]: Finished difference Result 2122 states and 2794 transitions. [2020-08-19 01:18:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:18:39,169 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-08-19 01:18:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:39,179 INFO L225 Difference]: With dead ends: 2122 [2020-08-19 01:18:39,180 INFO L226 Difference]: Without dead ends: 1391 [2020-08-19 01:18:39,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-08-19 01:18:39,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-08-19 01:18:39,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1307. [2020-08-19 01:18:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-08-19 01:18:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1584 transitions. [2020-08-19 01:18:39,293 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1584 transitions. Word has length 123 [2020-08-19 01:18:39,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:39,294 INFO L479 AbstractCegarLoop]: Abstraction has 1307 states and 1584 transitions. [2020-08-19 01:18:39,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:18:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1584 transitions. [2020-08-19 01:18:39,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-19 01:18:39,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:39,298 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] [2020-08-19 01:18:39,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:18:39,298 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:39,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:39,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1319133239, now seen corresponding path program 1 times [2020-08-19 01:18:39,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:39,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235722561] [2020-08-19 01:18:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 01:18:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:18:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 01:18:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-19 01:18:39,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235722561] [2020-08-19 01:18:39,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:18:39,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:18:39,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399366549] [2020-08-19 01:18:39,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:18:39,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:39,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:18:39,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:18:39,485 INFO L87 Difference]: Start difference. First operand 1307 states and 1584 transitions. Second operand 9 states. [2020-08-19 01:18:41,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:41,440 INFO L93 Difference]: Finished difference Result 3361 states and 4209 transitions. [2020-08-19 01:18:41,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 01:18:41,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-08-19 01:18:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:41,452 INFO L225 Difference]: With dead ends: 3361 [2020-08-19 01:18:41,452 INFO L226 Difference]: Without dead ends: 1577 [2020-08-19 01:18:41,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:18:41,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2020-08-19 01:18:41,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1511. [2020-08-19 01:18:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1511 states. [2020-08-19 01:18:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1789 transitions. [2020-08-19 01:18:41,614 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1789 transitions. Word has length 123 [2020-08-19 01:18:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:41,615 INFO L479 AbstractCegarLoop]: Abstraction has 1511 states and 1789 transitions. [2020-08-19 01:18:41,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:18:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1789 transitions. [2020-08-19 01:18:41,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-19 01:18:41,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:41,627 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, 1] [2020-08-19 01:18:41,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:18:41,628 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:41,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1505336733, now seen corresponding path program 1 times [2020-08-19 01:18:41,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:41,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271573000] [2020-08-19 01:18:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 01:18:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 01:18:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:18:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:18:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 01:18:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:18:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 01:18:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-08-19 01:18:41,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271573000] [2020-08-19 01:18:41,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:18:41,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 01:18:41,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724822968] [2020-08-19 01:18:41,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:18:41,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:41,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:18:41,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:18:41,905 INFO L87 Difference]: Start difference. First operand 1511 states and 1789 transitions. Second operand 9 states. [2020-08-19 01:18:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:43,396 INFO L93 Difference]: Finished difference Result 3075 states and 3746 transitions. [2020-08-19 01:18:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:18:43,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2020-08-19 01:18:43,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:43,407 INFO L225 Difference]: With dead ends: 3075 [2020-08-19 01:18:43,407 INFO L226 Difference]: Without dead ends: 1585 [2020-08-19 01:18:43,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:18:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2020-08-19 01:18:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1505. [2020-08-19 01:18:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-08-19 01:18:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1755 transitions. [2020-08-19 01:18:43,542 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1755 transitions. Word has length 177 [2020-08-19 01:18:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:43,543 INFO L479 AbstractCegarLoop]: Abstraction has 1505 states and 1755 transitions. [2020-08-19 01:18:43,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:18:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1755 transitions. [2020-08-19 01:18:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-19 01:18:43,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:43,549 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] [2020-08-19 01:18:43,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:18:43,549 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:43,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:43,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1006491229, now seen corresponding path program 1 times [2020-08-19 01:18:43,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:43,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498814399] [2020-08-19 01:18:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 01:18:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:18:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 01:18:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 01:18:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-19 01:18:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:18:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 01:18:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-19 01:18:43,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498814399] [2020-08-19 01:18:43,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:18:43,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:18:43,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151999998] [2020-08-19 01:18:43,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:18:43,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:43,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:18:43,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:18:43,867 INFO L87 Difference]: Start difference. First operand 1505 states and 1755 transitions. Second operand 10 states. [2020-08-19 01:18:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:46,094 INFO L93 Difference]: Finished difference Result 3514 states and 4187 transitions. [2020-08-19 01:18:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 01:18:46,095 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 178 [2020-08-19 01:18:46,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:46,102 INFO L225 Difference]: With dead ends: 3514 [2020-08-19 01:18:46,103 INFO L226 Difference]: Without dead ends: 1021 [2020-08-19 01:18:46,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-08-19 01:18:46,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-08-19 01:18:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 985. [2020-08-19 01:18:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-08-19 01:18:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1123 transitions. [2020-08-19 01:18:46,206 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1123 transitions. Word has length 178 [2020-08-19 01:18:46,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:46,207 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1123 transitions. [2020-08-19 01:18:46,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:18:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1123 transitions. [2020-08-19 01:18:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-19 01:18:46,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:46,213 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] [2020-08-19 01:18:46,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:18:46,214 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:46,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2053123678, now seen corresponding path program 1 times [2020-08-19 01:18:46,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:46,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540150998] [2020-08-19 01:18:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 01:18:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 01:18:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 01:18:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:18:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-19 01:18:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:18:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 01:18:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:46,648 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-08-19 01:18:46,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540150998] [2020-08-19 01:18:46,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:18:46,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:18:46,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394329813] [2020-08-19 01:18:46,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:18:46,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:46,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:18:46,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:18:46,651 INFO L87 Difference]: Start difference. First operand 985 states and 1123 transitions. Second operand 12 states. [2020-08-19 01:18:48,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:48,780 INFO L93 Difference]: Finished difference Result 1223 states and 1418 transitions. [2020-08-19 01:18:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 01:18:48,781 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 178 [2020-08-19 01:18:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:48,787 INFO L225 Difference]: With dead ends: 1223 [2020-08-19 01:18:48,788 INFO L226 Difference]: Without dead ends: 1220 [2020-08-19 01:18:48,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-08-19 01:18:48,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-19 01:18:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1172. [2020-08-19 01:18:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-08-19 01:18:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1335 transitions. [2020-08-19 01:18:48,879 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1335 transitions. Word has length 178 [2020-08-19 01:18:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:48,880 INFO L479 AbstractCegarLoop]: Abstraction has 1172 states and 1335 transitions. [2020-08-19 01:18:48,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:18:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1335 transitions. [2020-08-19 01:18:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-08-19 01:18:48,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:48,883 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] [2020-08-19 01:18:48,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:18:48,884 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:48,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:48,884 INFO L82 PathProgramCache]: Analyzing trace with hash 5197958, now seen corresponding path program 1 times [2020-08-19 01:18:48,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:48,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725539798] [2020-08-19 01:18:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:48,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:18:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:18:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:18:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:48,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:18:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:48,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:18:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:48,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:48,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:18:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:18:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 01:18:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 01:18:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 01:18:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:18:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-19 01:18:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:18:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:18:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:18:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:18:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 01:18:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:18:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-08-19 01:18:49,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725539798] [2020-08-19 01:18:49,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:18:49,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 01:18:49,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143323578] [2020-08-19 01:18:49,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:18:49,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:18:49,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:18:49,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:18:49,142 INFO L87 Difference]: Start difference. First operand 1172 states and 1335 transitions. Second operand 9 states. [2020-08-19 01:18:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:18:50,239 INFO L93 Difference]: Finished difference Result 2003 states and 2338 transitions. [2020-08-19 01:18:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:18:50,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-08-19 01:18:50,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:18:50,249 INFO L225 Difference]: With dead ends: 2003 [2020-08-19 01:18:50,250 INFO L226 Difference]: Without dead ends: 1220 [2020-08-19 01:18:50,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:18:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-19 01:18:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1186. [2020-08-19 01:18:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186 states. [2020-08-19 01:18:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1353 transitions. [2020-08-19 01:18:50,361 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1353 transitions. Word has length 182 [2020-08-19 01:18:50,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:18:50,362 INFO L479 AbstractCegarLoop]: Abstraction has 1186 states and 1353 transitions. [2020-08-19 01:18:50,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:18:50,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1353 transitions. [2020-08-19 01:18:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-19 01:18:50,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:18:50,366 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] [2020-08-19 01:18:50,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:18:50,366 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:18:50,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:18:50,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1390323253, now seen corresponding path program 1 times [2020-08-19 01:18:50,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:18:50,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513650869] [2020-08-19 01:18:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:18:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:18:50,406 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:18:50,406 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:18:50,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:18:50,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:18:50 BoogieIcfgContainer [2020-08-19 01:18:50,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:18:50,465 INFO L168 Benchmark]: Toolchain (without parser) took 27534.53 ms. Allocated memory was 147.3 MB in the beginning and 475.5 MB in the end (delta: 328.2 MB). Free memory was 103.4 MB in the beginning and 101.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 330.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:50,465 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:18:50,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.27 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 103.2 MB in the beginning and 183.7 MB in the end (delta: -80.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:50,467 INFO L168 Benchmark]: Boogie Preprocessor took 74.90 ms. Allocated memory is still 205.0 MB. Free memory was 183.7 MB in the beginning and 180.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:50,468 INFO L168 Benchmark]: RCFGBuilder took 610.88 ms. Allocated memory is still 205.0 MB. Free memory was 180.7 MB in the beginning and 147.8 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:50,474 INFO L168 Benchmark]: TraceAbstraction took 26304.87 ms. Allocated memory was 205.0 MB in the beginning and 475.5 MB in the end (delta: 270.5 MB). Free memory was 147.8 MB in the beginning and 101.4 MB in the end (delta: 46.4 MB). Peak memory consumption was 316.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:18:50,479 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 536.27 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 103.2 MB in the beginning and 183.7 MB in the end (delta: -80.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.90 ms. Allocated memory is still 205.0 MB. Free memory was 183.7 MB in the beginning and 180.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 610.88 ms. Allocated memory is still 205.0 MB. Free memory was 180.7 MB in the beginning and 147.8 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26304.87 ms. Allocated memory was 205.0 MB in the beginning and 475.5 MB in the end (delta: 270.5 MB). Free memory was 147.8 MB in the beginning and 101.4 MB in the end (delta: 46.4 MB). Peak memory consumption was 316.9 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 ; [L475] int __retres1 ; [L479] CALL init_model() [L390] m_i = 1 [L391] t1_i = 1 [L479] RET init_model() [L480] CALL start_simulation() [L416] int kernel_st ; [L417] int tmp ; [L418] int tmp___0 ; [L422] kernel_st = 0 [L423] FCALL update_channels() [L424] CALL init_threads() [L172] COND TRUE m_i == 1 [L173] m_st = 0 [L177] COND TRUE t1_i == 1 [L178] t1_st = 0 [L424] RET init_threads() [L425] CALL fire_delta_events() [L261] COND FALSE !(M_E == 0) [L266] COND FALSE !(T1_E == 0) [L271] COND FALSE !(E_M == 0) [L276] COND FALSE !(E_1 == 0) [L425] RET fire_delta_events() [L426] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND FALSE !(m_pc == 1) [L136] __retres1 = 0 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND FALSE !(t1_pc == 1) [L155] __retres1 = 0 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) [L426] RET activate_threads() [L427] CALL reset_delta_events() [L289] COND FALSE !(M_E == 1) [L294] COND FALSE !(T1_E == 1) [L299] COND FALSE !(E_M == 1) [L304] COND FALSE !(E_1 == 1) [L427] RET reset_delta_events() [L430] COND TRUE 1 [L433] kernel_st = 1 [L434] CALL eval() [L208] int tmp ; [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [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)) [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 [L242] CALL transmit1() [L90] COND TRUE t1_pc == 0 [L101] COND TRUE 1 [L103] t1_pc = 1 [L104] t1_st = 2 [L242] RET transmit1() [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [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 [L228] CALL master() [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND TRUE m_pc == 0 [L45] COND TRUE 1 [L48] token = __VERIFIER_nondet_int() [L49] local = token [L50] E_1 = 1 [L51] CALL immediate_notify() [L343] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND FALSE !(m_pc == 1) [L136] __retres1 = 0 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND TRUE t1_pc == 1 [L146] COND TRUE E_1 == 1 [L147] __retres1 = 1 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND TRUE \read(tmp___0) [L330] t1_st = 0 [L343] RET activate_threads() [L51] RET immediate_notify() [L52] E_1 = 2 [L53] m_pc = 1 [L54] m_st = 2 [L228] RET master() [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 [L242] CALL transmit1() [L90] COND FALSE !(t1_pc == 0) [L93] COND TRUE t1_pc == 1 [L109] token += 1 [L110] E_M = 1 [L111] CALL immediate_notify() [L343] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND TRUE m_pc == 1 [L127] COND TRUE E_M == 1 [L128] __retres1 = 1 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND TRUE \read(tmp) [L322] m_st = 0 [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND TRUE t1_pc == 1 [L146] COND FALSE !(E_1 == 1) [L155] __retres1 = 0 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) [L343] RET activate_threads() [L111] RET immediate_notify() [L112] E_M = 2 [L101] COND TRUE 1 [L103] t1_pc = 1 [L104] t1_st = 2 [L242] RET transmit1() [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [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 [L228] CALL master() [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND FALSE !(m_pc == 0) [L37] COND TRUE m_pc == 1 [L59] COND FALSE !(token != local + 1) [L64] COND TRUE tmp_var <= 5 [L65] COND TRUE tmp_var >= 5 [L70] COND TRUE tmp_var <= 5 [L71] COND TRUE tmp_var >= 5 [L72] COND TRUE tmp_var == 5 [L73] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.1s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 21.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2070 SDtfs, 7650 SDslu, 593 SDs, 0 SdLazy, 12274 SolverSat, 4259 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 436 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1511occurred 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: 1.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 1320 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1690 NumberOfCodeBlocks, 1690 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1494 ConstructedInterpolants, 0 QuantifiedInterpolants, 452054 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 474/494 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...