/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=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:55:29,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:55:29,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:55:29,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:55:29,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:55:29,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:55:29,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:55:29,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:55:29,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:55:29,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:55:29,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:55:29,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:55:29,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:55:29,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:55:29,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:55:29,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:55:29,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:55:29,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:55:29,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:55:29,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:55:29,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:55:29,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:55:29,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:55:29,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:55:29,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:55:29,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:55:29,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:55:29,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:55:29,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:55:29,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:55:29,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:55:29,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:55:29,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:55:29,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:55:29,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:55:29,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:55:29,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:55:29,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:55:29,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:55:29,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:55:29,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:55:29,829 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 02:55:29,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:55:29,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:55:29,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:55:29,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:55:29,854 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:55:29,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:55:29,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:55:29,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:55:29,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:55:29,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:55:29,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:55:29,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:55:29,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:55:29,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:55:29,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:55:29,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:55:29,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:55:29,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:55:29,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:55:29,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:55:29,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:55:29,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:55:29,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:55:29,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:55:29,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:55:29,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:55:29,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:55:29,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:55:29,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:55:29,859 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=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:55:30,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:55:30,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:55:30,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:55:30,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:55:30,206 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:55:30,207 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 02:55:30,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a387607ce/fafb624dd05c4aff877819bae5a88577/FLAG36096edca [2020-08-19 02:55:30,786 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:55:30,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 02:55:30,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a387607ce/fafb624dd05c4aff877819bae5a88577/FLAG36096edca [2020-08-19 02:55:31,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a387607ce/fafb624dd05c4aff877819bae5a88577 [2020-08-19 02:55:31,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:55:31,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:55:31,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:55:31,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:55:31,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:55:31,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:55:31" (1/1) ... [2020-08-19 02:55:31,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144c4f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31, skipping insertion in model container [2020-08-19 02:55:31,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:55:31" (1/1) ... [2020-08-19 02:55:31,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:55:31,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:55:31,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:55:31,473 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:55:31,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:55:31,625 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:55:31,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31 WrapperNode [2020-08-19 02:55:31,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:55:31,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:55:31,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:55:31,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:55:31,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31" (1/1) ... [2020-08-19 02:55:31,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31" (1/1) ... [2020-08-19 02:55:31,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31" (1/1) ... [2020-08-19 02:55:31,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31" (1/1) ... [2020-08-19 02:55:31,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31" (1/1) ... [2020-08-19 02:55:31,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31" (1/1) ... [2020-08-19 02:55:31,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31" (1/1) ... [2020-08-19 02:55:31,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:55:31,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:55:31,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:55:31,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:55:31,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31" (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 02:55:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:55:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:55:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-19 02:55:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-19 02:55:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-19 02:55:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-19 02:55:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-19 02:55:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-19 02:55:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-19 02:55:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-19 02:55:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-19 02:55:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-19 02:55:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-19 02:55:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-19 02:55:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-19 02:55:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-19 02:55:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-19 02:55:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-19 02:55:31,741 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-19 02:55:31,741 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-19 02:55:31,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:55:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:55:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:55:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-19 02:55:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-19 02:55:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-19 02:55:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-19 02:55:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-19 02:55:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-19 02:55:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-19 02:55:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-19 02:55:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-19 02:55:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-19 02:55:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-19 02:55:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-19 02:55:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-19 02:55:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-19 02:55:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-19 02:55:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-19 02:55:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-19 02:55:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-19 02:55:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:55:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:55:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:55:32,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:55:32,201 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:55:32,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:55:32 BoogieIcfgContainer [2020-08-19 02:55:32,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:55:32,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:55:32,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:55:32,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:55:32,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:55:31" (1/3) ... [2020-08-19 02:55:32,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9ba55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:55:32, skipping insertion in model container [2020-08-19 02:55:32,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:55:31" (2/3) ... [2020-08-19 02:55:32,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9ba55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:55:32, skipping insertion in model container [2020-08-19 02:55:32,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:55:32" (3/3) ... [2020-08-19 02:55:32,216 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-19 02:55:32,227 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:55:32,235 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:55:32,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:55:32,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:55:32,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:55:32,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:55:32,275 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:55:32,275 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:55:32,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:55:32,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:55:32,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:55:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-19 02:55:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 02:55:32,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:32,309 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] [2020-08-19 02:55:32,310 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:32,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:32,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-19 02:55:32,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:32,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102954762] [2020-08-19 02:55:32,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:55:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:55:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:55:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:55:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 02:55:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:55:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:55:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:55:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:55:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:55:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:55:32,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102954762] [2020-08-19 02:55:32,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:55:32,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:55:32,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774698629] [2020-08-19 02:55:32,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:55:32,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:55:32,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:55:32,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:55:32,905 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-19 02:55:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:34,832 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-19 02:55:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:55:34,834 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 02:55:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:34,852 INFO L225 Difference]: With dead ends: 479 [2020-08-19 02:55:34,852 INFO L226 Difference]: Without dead ends: 340 [2020-08-19 02:55:34,859 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 02:55:34,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-19 02:55:34,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-19 02:55:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 02:55:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-19 02:55:34,960 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-19 02:55:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:34,961 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-19 02:55:34,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:55:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-19 02:55:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 02:55:34,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:34,966 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] [2020-08-19 02:55:34,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:55:34,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:34,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-19 02:55:34,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:34,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120969403] [2020-08-19 02:55:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:55:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:55:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:55:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:55:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 02:55:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:55:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:55:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:55:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:55:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:55:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:35,194 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 02:55:35,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120969403] [2020-08-19 02:55:35,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:55:35,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:55:35,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128134516] [2020-08-19 02:55:35,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:55:35,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:55:35,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:55:35,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:55:35,198 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-19 02:55:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:36,224 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-19 02:55:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:55:36,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 02:55:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:36,232 INFO L225 Difference]: With dead ends: 545 [2020-08-19 02:55:36,236 INFO L226 Difference]: Without dead ends: 331 [2020-08-19 02:55:36,241 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 02:55:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-19 02:55:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-19 02:55:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 02:55:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-19 02:55:36,326 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-19 02:55:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:36,326 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-19 02:55:36,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:55:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-19 02:55:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 02:55:36,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:36,336 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] [2020-08-19 02:55:36,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:55:36,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:36,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:36,339 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-19 02:55:36,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:36,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640879927] [2020-08-19 02:55:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:55:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:55:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:55:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:55:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 02:55:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:55:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:55:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:55:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:55:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:55:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:36,549 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 02:55:36,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640879927] [2020-08-19 02:55:36,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:55:36,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:55:36,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554854753] [2020-08-19 02:55:36,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:55:36,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:55:36,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:55:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:55:36,552 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-19 02:55:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:37,890 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-19 02:55:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:55:37,891 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 02:55:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:37,896 INFO L225 Difference]: With dead ends: 548 [2020-08-19 02:55:37,896 INFO L226 Difference]: Without dead ends: 335 [2020-08-19 02:55:37,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:55:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-19 02:55:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-19 02:55:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-19 02:55:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-19 02:55:37,932 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-19 02:55:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:37,933 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-19 02:55:37,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:55:37,933 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-19 02:55:37,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 02:55:37,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:37,934 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] [2020-08-19 02:55:37,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:55:37,935 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:37,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-19 02:55:37,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:37,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456665579] [2020-08-19 02:55:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:37,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:55:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:55:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:55:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:55:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 02:55:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:55:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:55:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:55:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:55:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:55:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:38,135 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 02:55:38,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456665579] [2020-08-19 02:55:38,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:55:38,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:55:38,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356917142] [2020-08-19 02:55:38,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:55:38,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:55:38,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:55:38,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:55:38,140 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-19 02:55:39,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:39,791 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-19 02:55:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:55:39,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 02:55:39,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:39,797 INFO L225 Difference]: With dead ends: 848 [2020-08-19 02:55:39,797 INFO L226 Difference]: Without dead ends: 630 [2020-08-19 02:55:39,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:55:39,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-19 02:55:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-19 02:55:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-19 02:55:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-19 02:55:39,854 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-19 02:55:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:39,854 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-19 02:55:39,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:55:39,855 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-19 02:55:39,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:55:39,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:39,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:55:39,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:55:39,857 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:39,857 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-19 02:55:39,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:39,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364569216] [2020-08-19 02:55:39,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:55:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:55:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:55:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:39,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:55:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:39,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 02:55:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:55:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:55:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:40,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:55:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:55:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:40,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:55:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:40,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:55:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:40,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 02:55:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:55:40,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364569216] [2020-08-19 02:55:40,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:55:40,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:55:40,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003875280] [2020-08-19 02:55:40,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:55:40,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:55:40,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:55:40,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:55:40,088 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-19 02:55:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:41,617 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-19 02:55:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:55:41,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 02:55:41,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:41,624 INFO L225 Difference]: With dead ends: 1125 [2020-08-19 02:55:41,625 INFO L226 Difference]: Without dead ends: 686 [2020-08-19 02:55:41,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:55:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-19 02:55:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-19 02:55:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-19 02:55:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-19 02:55:41,723 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-19 02:55:41,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:41,724 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-19 02:55:41,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:55:41,724 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-19 02:55:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:55:41,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:41,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:55:41,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:55:41,733 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-19 02:55:41,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:41,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359483596] [2020-08-19 02:55:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:55:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:55:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:55:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:55:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 02:55:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:55:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:55:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:55:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:55:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:55:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:55:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 02:55:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:55:41,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359483596] [2020-08-19 02:55:41,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:55:41,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:55:41,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022973172] [2020-08-19 02:55:41,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:55:41,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:55:41,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:55:41,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:55:41,926 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-19 02:55:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:43,633 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-19 02:55:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 02:55:43,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 02:55:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:43,640 INFO L225 Difference]: With dead ends: 1387 [2020-08-19 02:55:43,640 INFO L226 Difference]: Without dead ends: 859 [2020-08-19 02:55:43,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2020-08-19 02:55:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-19 02:55:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-19 02:55:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-19 02:55:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-19 02:55:43,709 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-19 02:55:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:43,710 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-19 02:55:43,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:55:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-19 02:55:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:55:43,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:43,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:55:43,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:55:43,712 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:43,713 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-19 02:55:43,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:43,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469842784] [2020-08-19 02:55:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:55:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:55:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:55:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:55:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 02:55:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:55:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:55:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:55:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:55:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:55:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:55:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 02:55:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 02:55:43,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469842784] [2020-08-19 02:55:43,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:55:43,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 02:55:43,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452390620] [2020-08-19 02:55:43,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:55:43,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:55:43,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:55:43,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:55:43,825 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-19 02:55:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:45,482 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-19 02:55:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:55:45,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 02:55:45,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:45,494 INFO L225 Difference]: With dead ends: 1930 [2020-08-19 02:55:45,495 INFO L226 Difference]: Without dead ends: 1304 [2020-08-19 02:55:45,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:55:45,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-19 02:55:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-19 02:55:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-19 02:55:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-19 02:55:45,607 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-19 02:55:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:45,607 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-19 02:55:45,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:55:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-19 02:55:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 02:55:45,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:45,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:55:45,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:55:45,611 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-19 02:55:45,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:45,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510008657] [2020-08-19 02:55:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:55:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:55:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:55:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:55:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 02:55:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:55:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:55:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:55:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:55:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:55:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:55:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:55:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 02:55:45,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510008657] [2020-08-19 02:55:45,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:55:45,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:55:45,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777529933] [2020-08-19 02:55:45,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:55:45,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:55:45,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:55:45,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:55:45,779 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 8 states. [2020-08-19 02:55:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:47,343 INFO L93 Difference]: Finished difference Result 3462 states and 4605 transitions. [2020-08-19 02:55:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:55:47,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-19 02:55:47,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:47,358 INFO L225 Difference]: With dead ends: 3462 [2020-08-19 02:55:47,359 INFO L226 Difference]: Without dead ends: 1841 [2020-08-19 02:55:47,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:55:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-08-19 02:55:47,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1489. [2020-08-19 02:55:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-08-19 02:55:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1820 transitions. [2020-08-19 02:55:47,498 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1820 transitions. Word has length 95 [2020-08-19 02:55:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:47,499 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1820 transitions. [2020-08-19 02:55:47,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:55:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1820 transitions. [2020-08-19 02:55:47,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-19 02:55:47,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:47,503 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, 1, 1, 1, 1, 1, 1] [2020-08-19 02:55:47,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:55:47,503 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:47,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:47,504 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-19 02:55:47,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:47,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396191872] [2020-08-19 02:55:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:55:47,539 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:55:47,539 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:55:47,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:55:47,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:55:47 BoogieIcfgContainer [2020-08-19 02:55:47,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:55:47,581 INFO L168 Benchmark]: Toolchain (without parser) took 16431.42 ms. Allocated memory was 139.5 MB in the beginning and 403.7 MB in the end (delta: 264.2 MB). Free memory was 102.4 MB in the beginning and 253.0 MB in the end (delta: -150.6 MB). Peak memory consumption was 113.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:47,582 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 02:55:47,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.35 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 178.5 MB in the end (delta: -76.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:47,584 INFO L168 Benchmark]: Boogie Preprocessor took 42.42 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:47,585 INFO L168 Benchmark]: RCFGBuilder took 537.55 ms. Allocated memory is still 201.9 MB. Free memory was 176.5 MB in the beginning and 146.3 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:47,586 INFO L168 Benchmark]: TraceAbstraction took 15370.33 ms. Allocated memory was 201.9 MB in the beginning and 403.7 MB in the end (delta: 201.9 MB). Free memory was 145.6 MB in the beginning and 253.0 MB in the end (delta: -107.4 MB). Peak memory consumption was 94.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:47,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 476.35 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 178.5 MB in the end (delta: -76.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.42 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 537.55 ms. Allocated memory is still 201.9 MB. Free memory was 176.5 MB in the beginning and 146.3 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15370.33 ms. Allocated memory was 201.9 MB in the beginning and 403.7 MB in the end (delta: 201.9 MB). Free memory was 145.6 MB in the beginning and 253.0 MB in the end (delta: -107.4 MB). Peak memory consumption was 94.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int m_i ; [L20] int t1_i ; [L21] int M_E = 2; [L22] int T1_E = 2; [L23] int E_1 = 2; [L439] int __retres1 ; [L443] CALL init_model() [L354] m_i = 1 [L355] t1_i = 1 [L443] RET init_model() [L444] CALL start_simulation() [L380] int kernel_st ; [L381] int tmp ; [L382] int tmp___0 ; [L386] kernel_st = 0 [L387] FCALL update_channels() [L388] CALL init_threads() [L151] COND TRUE m_i == 1 [L152] m_st = 0 [L156] COND TRUE t1_i == 1 [L157] t1_st = 0 [L388] RET init_threads() [L389] CALL fire_delta_events() [L240] COND FALSE !(M_E == 0) [L245] COND FALSE !(T1_E == 0) [L250] COND FALSE !(E_1 == 0) [L389] RET fire_delta_events() [L390] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND FALSE !(t1_pc == 1) [L134] __retres1 = 0 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND FALSE !(\read(tmp___0)) [L390] RET activate_threads() [L391] CALL reset_delta_events() [L263] COND FALSE !(M_E == 1) [L268] COND FALSE !(T1_E == 1) [L273] COND FALSE !(E_1 == 1) [L391] RET reset_delta_events() [L394] COND TRUE 1 [L397] kernel_st = 1 [L398] CALL eval() [L187] int tmp ; [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND FALSE !(\read(tmp_ndt_1)) [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND TRUE t1_pc == 0 [L83] COND TRUE 1 [L85] t1_pc = 1 [L86] t1_st = 2 [L221] RET transmit1() [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND TRUE \read(tmp_ndt_1) [L206] m_st = 1 [L207] CALL master() [L31] COND TRUE m_pc == 0 [L42] COND TRUE 1 [L45] E_1 = 1 [L46] CALL immediate_notify() [L312] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND TRUE t1_pc == 1 [L125] COND TRUE E_1 == 1 [L126] __retres1 = 1 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND TRUE \read(tmp___0) [L299] t1_st = 0 [L312] RET activate_threads() [L46] RET immediate_notify() [L47] E_1 = 2 [L50] COND TRUE 1 [L52] m_pc = 1 [L53] m_st = 2 [L207] RET master() [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND FALSE !(t1_pc == 0) [L75] COND TRUE t1_pc == 1 [L91] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.2s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1103 SDtfs, 4316 SDslu, 485 SDs, 0 SdLazy, 7366 SolverSat, 2609 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1489occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 1381 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 803 NumberOfCodeBlocks, 803 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 666 ConstructedInterpolants, 0 QuantifiedInterpolants, 121640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 54/57 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...