/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=HIGHLEXORDER -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 [2020-08-18 19:39:06,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:39:06,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:39:06,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:39:06,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:39:06,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:39:06,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:39:06,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:39:06,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:39:06,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:39:06,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:39:06,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:39:06,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:39:06,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:39:06,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:39:06,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:39:06,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:39:06,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:39:06,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:39:06,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:39:06,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:39:06,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:39:06,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:39:06,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:39:06,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:39:06,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:39:06,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:39:06,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:39:06,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:39:06,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:39:06,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:39:06,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:39:06,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:39:06,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:39:06,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:39:06,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:39:06,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:39:06,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:39:06,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:39:06,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:39:06,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:39:06,834 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 [2020-08-18 19:39:06,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:39:06,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:39:06,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:39:06,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:39:06,858 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:39:06,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:39:06,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:39:06,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:39:06,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:39:06,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:39:06,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:39:06,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:39:06,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:39:06,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:39:06,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:39:06,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:39:06,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:39:06,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:39:06,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:39:06,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:39:06,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:39:06,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:39:06,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:39:06,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:39:06,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:39:06,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:39:06,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:39:06,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:39:06,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:39:06,863 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:39:07,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:39:07,192 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:39:07,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:39:07,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:39:07,197 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:39:07,198 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-18 19:39:07,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83b8fd6ac/c592158b36b341928b6fc21dc826ddf5/FLAGab97480c5 [2020-08-18 19:39:07,773 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:39:07,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-18 19:39:07,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83b8fd6ac/c592158b36b341928b6fc21dc826ddf5/FLAGab97480c5 [2020-08-18 19:39:08,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83b8fd6ac/c592158b36b341928b6fc21dc826ddf5 [2020-08-18 19:39:08,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:39:08,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:39:08,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:39:08,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:39:08,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:39:08,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:39:08" (1/1) ... [2020-08-18 19:39:08,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1043d88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08, skipping insertion in model container [2020-08-18 19:39:08,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:39:08" (1/1) ... [2020-08-18 19:39:08,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:39:08,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:39:08,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:39:08,411 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:39:08,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:39:08,561 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:39:08,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08 WrapperNode [2020-08-18 19:39:08,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:39:08,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:39:08,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:39:08,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:39:08,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08" (1/1) ... [2020-08-18 19:39:08,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08" (1/1) ... [2020-08-18 19:39:08,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08" (1/1) ... [2020-08-18 19:39:08,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08" (1/1) ... [2020-08-18 19:39:08,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08" (1/1) ... [2020-08-18 19:39:08,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08" (1/1) ... [2020-08-18 19:39:08,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08" (1/1) ... [2020-08-18 19:39:08,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:39:08,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:39:08,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:39:08,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:39:08,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08" (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 [2020-08-18 19:39:08,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:39:08,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:39:08,678 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 19:39:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 19:39:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 19:39:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 19:39:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 19:39:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 19:39:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 19:39:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 19:39:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 19:39:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 19:39:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 19:39:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 19:39:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 19:39:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 19:39:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 19:39:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 19:39:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 19:39:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 19:39:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:39:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:39:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:39:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 19:39:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 19:39:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 19:39:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 19:39:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 19:39:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 19:39:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 19:39:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 19:39:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 19:39:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 19:39:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 19:39:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 19:39:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 19:39:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 19:39:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 19:39:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 19:39:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 19:39:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 19:39:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:39:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:39:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:39:09,194 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:39:09,194 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:39:09,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:39:09 BoogieIcfgContainer [2020-08-18 19:39:09,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:39:09,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:39:09,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:39:09,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:39:09,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:39:08" (1/3) ... [2020-08-18 19:39:09,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e1300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:39:09, skipping insertion in model container [2020-08-18 19:39:09,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:08" (2/3) ... [2020-08-18 19:39:09,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e1300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:39:09, skipping insertion in model container [2020-08-18 19:39:09,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:39:09" (3/3) ... [2020-08-18 19:39:09,209 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-18 19:39:09,220 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:39:09,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:39:09,243 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:39:09,271 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:39:09,271 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:39:09,271 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:39:09,271 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:39:09,272 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:39:09,272 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:39:09,272 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:39:09,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:39:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-18 19:39:09,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 19:39:09,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:09,308 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] [2020-08-18 19:39:09,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:09,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-18 19:39:09,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:09,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491229966] [2020-08-18 19:39:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:39:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:39:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 19:39:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 19:39:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:39:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:39:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:39:09,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491229966] [2020-08-18 19:39:09,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:09,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:39:09,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090825133] [2020-08-18 19:39:09,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:39:09,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:09,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:39:09,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:39:09,869 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-18 19:39:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:11,717 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-18 19:39:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:39:11,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-18 19:39:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:11,746 INFO L225 Difference]: With dead ends: 479 [2020-08-18 19:39:11,747 INFO L226 Difference]: Without dead ends: 340 [2020-08-18 19:39:11,753 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 [2020-08-18 19:39:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-18 19:39:11,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-18 19:39:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-18 19:39:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-18 19:39:11,853 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-18 19:39:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:11,853 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-18 19:39:11,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:39:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-18 19:39:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 19:39:11,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:11,858 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] [2020-08-18 19:39:11,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:39:11,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:11,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:11,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-18 19:39:11,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:11,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103984225] [2020-08-18 19:39:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:39:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:39:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 19:39:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 19:39:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:39:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:39:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:39:12,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103984225] [2020-08-18 19:39:12,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:12,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:39:12,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666456357] [2020-08-18 19:39:12,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:39:12,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:12,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:39:12,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:39:12,091 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-18 19:39:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:13,100 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-18 19:39:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:39:13,103 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-18 19:39:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:13,111 INFO L225 Difference]: With dead ends: 545 [2020-08-18 19:39:13,113 INFO L226 Difference]: Without dead ends: 331 [2020-08-18 19:39:13,121 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 [2020-08-18 19:39:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-18 19:39:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-18 19:39:13,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-18 19:39:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-18 19:39:13,199 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-18 19:39:13,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:13,199 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-18 19:39:13,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:39:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-18 19:39:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 19:39:13,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:13,202 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] [2020-08-18 19:39:13,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:39:13,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:13,203 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-18 19:39:13,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:13,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969973103] [2020-08-18 19:39:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:39:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:39:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 19:39:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 19:39:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:39:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:39:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:13,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:39:13,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969973103] [2020-08-18 19:39:13,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:13,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:39:13,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27411819] [2020-08-18 19:39:13,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:39:13,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:13,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:39:13,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:39:13,395 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-18 19:39:14,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:14,682 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-18 19:39:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:39:14,683 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-18 19:39:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:14,692 INFO L225 Difference]: With dead ends: 548 [2020-08-18 19:39:14,692 INFO L226 Difference]: Without dead ends: 335 [2020-08-18 19:39:14,696 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 [2020-08-18 19:39:14,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-18 19:39:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-18 19:39:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 19:39:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-18 19:39:14,759 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-18 19:39:14,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:14,762 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-18 19:39:14,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:39:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-18 19:39:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 19:39:14,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:14,772 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] [2020-08-18 19:39:14,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:39:14,773 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:14,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:14,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-18 19:39:14,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:14,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081614415] [2020-08-18 19:39:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:39:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:39:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 19:39:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 19:39:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:39:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:39:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:39:14,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081614415] [2020-08-18 19:39:14,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:14,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:39:14,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405303177] [2020-08-18 19:39:14,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:39:14,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:14,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:39:14,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:39:14,953 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-18 19:39:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:16,629 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-18 19:39:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:39:16,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-18 19:39:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:16,639 INFO L225 Difference]: With dead ends: 848 [2020-08-18 19:39:16,639 INFO L226 Difference]: Without dead ends: 630 [2020-08-18 19:39:16,642 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 [2020-08-18 19:39:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-18 19:39:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-18 19:39:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-18 19:39:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-18 19:39:16,719 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-18 19:39:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:16,720 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-18 19:39:16,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:39:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-18 19:39:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:39:16,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:16,724 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] [2020-08-18 19:39:16,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:39:16,725 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:16,726 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-18 19:39:16,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:16,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178311014] [2020-08-18 19:39:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:39:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:39:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 19:39:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 19:39:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:39:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:39:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 19:39:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 19:39:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:39:16,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178311014] [2020-08-18 19:39:16,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:16,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:39:16,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344002794] [2020-08-18 19:39:16,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:39:16,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:16,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:39:16,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:39:16,949 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-18 19:39:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:18,346 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-18 19:39:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:39:18,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 19:39:18,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:18,356 INFO L225 Difference]: With dead ends: 1125 [2020-08-18 19:39:18,356 INFO L226 Difference]: Without dead ends: 686 [2020-08-18 19:39:18,359 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 [2020-08-18 19:39:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-18 19:39:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-18 19:39:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-18 19:39:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-18 19:39:18,421 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-18 19:39:18,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:18,422 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-18 19:39:18,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:39:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-18 19:39:18,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:39:18,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:18,424 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] [2020-08-18 19:39:18,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:39:18,424 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:18,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:18,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-18 19:39:18,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:18,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236539927] [2020-08-18 19:39:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:39:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:39:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 19:39:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 19:39:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:39:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:39:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 19:39:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 19:39:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:39:18,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236539927] [2020-08-18 19:39:18,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:18,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:39:18,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940984970] [2020-08-18 19:39:18,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:39:18,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:18,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:39:18,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:39:18,585 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-18 19:39:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:20,201 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-18 19:39:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 19:39:20,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 19:39:20,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:20,209 INFO L225 Difference]: With dead ends: 1387 [2020-08-18 19:39:20,210 INFO L226 Difference]: Without dead ends: 859 [2020-08-18 19:39:20,212 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 [2020-08-18 19:39:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-18 19:39:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-18 19:39:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-18 19:39:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-18 19:39:20,294 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-18 19:39:20,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:20,295 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-18 19:39:20,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:39:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-18 19:39:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:39:20,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:20,298 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] [2020-08-18 19:39:20,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:39:20,298 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:20,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-18 19:39:20,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:20,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372821808] [2020-08-18 19:39:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:39:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:39:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 19:39:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 19:39:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:39:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:39:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 19:39:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 19:39:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 19:39:20,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372821808] [2020-08-18 19:39:20,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:39:20,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 19:39:20,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366485976] [2020-08-18 19:39:20,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:39:20,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:20,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:39:20,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:39:20,471 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-18 19:39:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:21,985 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-18 19:39:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:39:21,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 19:39:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:21,994 INFO L225 Difference]: With dead ends: 1930 [2020-08-18 19:39:21,995 INFO L226 Difference]: Without dead ends: 1304 [2020-08-18 19:39:21,998 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 [2020-08-18 19:39:22,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-18 19:39:22,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-18 19:39:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-18 19:39:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-18 19:39:22,089 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-18 19:39:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:22,090 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-18 19:39:22,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:39:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-18 19:39:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 19:39:22,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:22,093 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] [2020-08-18 19:39:22,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:39:22,093 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-18 19:39:22,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:22,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20981492] [2020-08-18 19:39:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:39:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:39:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 19:39:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 19:39:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:39:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:39:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:39:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 19:39:22,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20981492] [2020-08-18 19:39:22,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:22,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:39:22,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282059797] [2020-08-18 19:39:22,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:39:22,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:22,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:39:22,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:39:22,235 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 8 states. [2020-08-18 19:39:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:23,713 INFO L93 Difference]: Finished difference Result 3462 states and 4605 transitions. [2020-08-18 19:39:23,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:39:23,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-18 19:39:23,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:23,725 INFO L225 Difference]: With dead ends: 3462 [2020-08-18 19:39:23,725 INFO L226 Difference]: Without dead ends: 1841 [2020-08-18 19:39:23,734 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 [2020-08-18 19:39:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-08-18 19:39:23,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1489. [2020-08-18 19:39:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-08-18 19:39:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1820 transitions. [2020-08-18 19:39:23,856 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1820 transitions. Word has length 95 [2020-08-18 19:39:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:23,857 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1820 transitions. [2020-08-18 19:39:23,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:39:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1820 transitions. [2020-08-18 19:39:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-18 19:39:23,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:23,862 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] [2020-08-18 19:39:23,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:39:23,862 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:23,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2094315367, now seen corresponding path program 1 times [2020-08-18 19:39:23,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:23,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683478777] [2020-08-18 19:39:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:39:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:39:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 19:39:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 19:39:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:39:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 19:39:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:39:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:24,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 19:39:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 19:39:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:24,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:24,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:24,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:39:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-08-18 19:39:24,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683478777] [2020-08-18 19:39:24,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:24,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:39:24,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102564488] [2020-08-18 19:39:24,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:39:24,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:24,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:39:24,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:39:24,063 INFO L87 Difference]: Start difference. First operand 1489 states and 1820 transitions. Second operand 10 states. [2020-08-18 19:39:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:25,145 INFO L93 Difference]: Finished difference Result 3303 states and 4194 transitions. [2020-08-18 19:39:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:39:25,146 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 129 [2020-08-18 19:39:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:25,158 INFO L225 Difference]: With dead ends: 3303 [2020-08-18 19:39:25,158 INFO L226 Difference]: Without dead ends: 1835 [2020-08-18 19:39:25,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:39:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-18 19:39:25,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1483. [2020-08-18 19:39:25,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-08-18 19:39:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1810 transitions. [2020-08-18 19:39:25,277 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1810 transitions. Word has length 129 [2020-08-18 19:39:25,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:25,278 INFO L479 AbstractCegarLoop]: Abstraction has 1483 states and 1810 transitions. [2020-08-18 19:39:25,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:39:25,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1810 transitions. [2020-08-18 19:39:25,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-18 19:39:25,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:25,285 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] [2020-08-18 19:39:25,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:39:25,285 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:25,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:25,285 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-18 19:39:25,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:25,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386503562] [2020-08-18 19:39:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:39:25,312 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:39:25,312 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:39:25,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:39:25,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:39:25 BoogieIcfgContainer [2020-08-18 19:39:25,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:39:25,366 INFO L168 Benchmark]: Toolchain (without parser) took 17234.54 ms. Allocated memory was 138.9 MB in the beginning and 434.6 MB in the end (delta: 295.7 MB). Free memory was 102.2 MB in the beginning and 105.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 292.0 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:25,367 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-18 19:39:25,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.25 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 179.4 MB in the end (delta: -77.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:25,369 INFO L168 Benchmark]: Boogie Preprocessor took 50.78 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 177.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:25,369 INFO L168 Benchmark]: RCFGBuilder took 586.54 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 147.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:25,370 INFO L168 Benchmark]: TraceAbstraction took 16162.99 ms. Allocated memory was 201.3 MB in the beginning and 434.6 MB in the end (delta: 233.3 MB). Free memory was 147.5 MB in the beginning and 105.9 MB in the end (delta: 41.5 MB). Peak memory consumption was 274.8 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:25,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 428.25 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 179.4 MB in the end (delta: -77.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.78 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 177.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 586.54 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 147.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16162.99 ms. Allocated memory was 201.3 MB in the beginning and 434.6 MB in the end (delta: 233.3 MB). Free memory was 147.5 MB in the beginning and 105.9 MB in the end (delta: 41.5 MB). Peak memory consumption was 274.8 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: 16.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1205 SDtfs, 4740 SDslu, 497 SDs, 0 SdLazy, 7971 SolverSat, 2864 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 2.3s 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: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 1733 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 932 NumberOfCodeBlocks, 932 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 794 ConstructedInterpolants, 0 QuantifiedInterpolants, 152616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 89/92 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...