/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:48:50,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:48:50,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:48:51,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:48:51,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:48:51,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:48:51,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:48:51,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:48:51,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:48:51,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:48:51,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:48:51,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:48:51,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:48:51,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:48:51,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:48:51,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:48:51,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:48:51,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:48:51,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:48:51,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:48:51,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:48:51,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:48:51,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:48:51,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:48:51,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:48:51,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:48:51,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:48:51,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:48:51,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:48:51,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:48:51,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:48:51,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:48:51,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:48:51,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:48:51,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:48:51,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:48:51,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:48:51,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:48:51,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:48:51,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:48:51,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:48:51,057 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 [2020-08-22 04:48:51,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:48:51,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:48:51,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:48:51,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:48:51,113 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:48:51,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:48:51,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:48:51,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:48:51,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:48:51,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:48:51,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:48:51,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:48:51,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:48:51,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:48:51,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:48:51,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:48:51,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:48:51,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:48:51,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:48:51,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:48:51,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:48:51,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:48:51,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:48:51,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:48:51,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:48:51,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:48:51,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:48:51,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:48:51,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:48:51,120 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:48:51,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:48:51,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:48:51,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:48:51,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:48:51,451 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:48:51,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-08-22 04:48:51,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67b712887/f230435653bb40ab88f6b26aefe0a33b/FLAGf7d2e5aa1 [2020-08-22 04:48:51,993 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:48:51,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-08-22 04:48:52,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67b712887/f230435653bb40ab88f6b26aefe0a33b/FLAGf7d2e5aa1 [2020-08-22 04:48:52,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67b712887/f230435653bb40ab88f6b26aefe0a33b [2020-08-22 04:48:52,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:48:52,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:48:52,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:48:52,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:48:52,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:48:52,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41238cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52, skipping insertion in model container [2020-08-22 04:48:52,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:48:52,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:48:52,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:48:52,659 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:48:52,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:48:52,801 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:48:52,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52 WrapperNode [2020-08-22 04:48:52,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:48:52,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:48:52,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:48:52,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:48:52,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:48:52,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:48:52,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:48:52,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:48:52,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52" (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 [2020-08-22 04:48:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:48:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:48:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 04:48:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 04:48:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 04:48:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 04:48:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 04:48:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 04:48:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 04:48:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 04:48:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 04:48:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 04:48:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 04:48:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 04:48:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 04:48:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 04:48:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 04:48:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 04:48:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 04:48:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 04:48:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:48:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:48:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 04:48:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 04:48:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 04:48:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 04:48:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:48:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 04:48:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 04:48:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 04:48:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 04:48:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 04:48:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 04:48:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 04:48:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 04:48:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 04:48:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 04:48:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 04:48:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 04:48:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 04:48:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 04:48:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:48:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:48:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:48:53,415 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:48:53,416 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 04:48:53,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:48:53 BoogieIcfgContainer [2020-08-22 04:48:53,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:48:53,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:48:53,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:48:53,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:48:53,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:48:52" (1/3) ... [2020-08-22 04:48:53,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19eb0d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:48:53, skipping insertion in model container [2020-08-22 04:48:53,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52" (2/3) ... [2020-08-22 04:48:53,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19eb0d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:48:53, skipping insertion in model container [2020-08-22 04:48:53,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:48:53" (3/3) ... [2020-08-22 04:48:53,430 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2020-08-22 04:48:53,441 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:48:53,449 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:48:53,464 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:48:53,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:48:53,493 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:48:53,493 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:48:53,493 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:48:53,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:48:53,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:48:53,494 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:48:53,494 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:48:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-08-22 04:48:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:48:53,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:48:53,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:48:53,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:48:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:48:53,539 INFO L82 PathProgramCache]: Analyzing trace with hash -540085109, now seen corresponding path program 1 times [2020-08-22 04:48:53,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:48:53,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927669386] [2020-08-22 04:48:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:48:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:53,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:48:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:53,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:48:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:53,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:48:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:48:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:48:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:48:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:48:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:48:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:48:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:48:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:48:54,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927669386] [2020-08-22 04:48:54,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:48:54,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:48:54,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402237648] [2020-08-22 04:48:54,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:48:54,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:48:54,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:48:54,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:48:54,178 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 9 states. [2020-08-22 04:48:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:48:56,258 INFO L93 Difference]: Finished difference Result 522 states and 794 transitions. [2020-08-22 04:48:56,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:48:56,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-22 04:48:56,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:48:56,281 INFO L225 Difference]: With dead ends: 522 [2020-08-22 04:48:56,282 INFO L226 Difference]: Without dead ends: 371 [2020-08-22 04:48:56,290 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 [2020-08-22 04:48:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-08-22 04:48:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 257. [2020-08-22 04:48:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-22 04:48:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 346 transitions. [2020-08-22 04:48:56,396 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 346 transitions. Word has length 78 [2020-08-22 04:48:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:48:56,396 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 346 transitions. [2020-08-22 04:48:56,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:48:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 346 transitions. [2020-08-22 04:48:56,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:48:56,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:48:56,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:48:56,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:48:56,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:48:56,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:48:56,402 INFO L82 PathProgramCache]: Analyzing trace with hash 211359051, now seen corresponding path program 1 times [2020-08-22 04:48:56,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:48:56,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229304084] [2020-08-22 04:48:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:48:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:48:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:48:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:48:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:48:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:48:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:48:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:48:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:48:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:48:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:48:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:48:56,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229304084] [2020-08-22 04:48:56,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:48:56,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:48:56,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930476544] [2020-08-22 04:48:56,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:48:56,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:48:56,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:48:56,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:48:56,630 INFO L87 Difference]: Start difference. First operand 257 states and 346 transitions. Second operand 10 states. [2020-08-22 04:48:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:48:57,789 INFO L93 Difference]: Finished difference Result 599 states and 848 transitions. [2020-08-22 04:48:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:48:57,790 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-22 04:48:57,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:48:57,802 INFO L225 Difference]: With dead ends: 599 [2020-08-22 04:48:57,802 INFO L226 Difference]: Without dead ends: 361 [2020-08-22 04:48:57,806 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 [2020-08-22 04:48:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-08-22 04:48:57,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 257. [2020-08-22 04:48:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-22 04:48:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 339 transitions. [2020-08-22 04:48:57,854 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 339 transitions. Word has length 78 [2020-08-22 04:48:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:48:57,855 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 339 transitions. [2020-08-22 04:48:57,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:48:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 339 transitions. [2020-08-22 04:48:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:48:57,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:48:57,858 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, 1, 1, 1] [2020-08-22 04:48:57,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:48:57,858 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:48:57,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:48:57,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2119705461, now seen corresponding path program 1 times [2020-08-22 04:48:57,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:48:57,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981483316] [2020-08-22 04:48:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:48:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:48:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:48:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:48:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:48:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:48:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:48:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:48:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:48:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:48:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:48:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:48:58,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981483316] [2020-08-22 04:48:58,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:48:58,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:48:58,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372904320] [2020-08-22 04:48:58,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:48:58,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:48:58,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:48:58,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:48:58,061 INFO L87 Difference]: Start difference. First operand 257 states and 339 transitions. Second operand 10 states. [2020-08-22 04:48:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:48:59,446 INFO L93 Difference]: Finished difference Result 722 states and 1058 transitions. [2020-08-22 04:48:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 04:48:59,447 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-22 04:48:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:48:59,454 INFO L225 Difference]: With dead ends: 722 [2020-08-22 04:48:59,454 INFO L226 Difference]: Without dead ends: 484 [2020-08-22 04:48:59,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-22 04:48:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-22 04:48:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 309. [2020-08-22 04:48:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-22 04:48:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 392 transitions. [2020-08-22 04:48:59,536 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 392 transitions. Word has length 78 [2020-08-22 04:48:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:48:59,539 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 392 transitions. [2020-08-22 04:48:59,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:48:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 392 transitions. [2020-08-22 04:48:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:48:59,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:48:59,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:48:59,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:48:59,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:48:59,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:48:59,554 INFO L82 PathProgramCache]: Analyzing trace with hash -579817174, now seen corresponding path program 1 times [2020-08-22 04:48:59,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:48:59,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256448137] [2020-08-22 04:48:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:48:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:48:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:48:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:48:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:48:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:48:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:48:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:48:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:48:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:48:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:48:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:48:59,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256448137] [2020-08-22 04:48:59,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:48:59,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:48:59,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282895947] [2020-08-22 04:48:59,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:48:59,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:48:59,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:48:59,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:48:59,729 INFO L87 Difference]: Start difference. First operand 309 states and 392 transitions. Second operand 10 states. [2020-08-22 04:49:01,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:01,066 INFO L93 Difference]: Finished difference Result 744 states and 1001 transitions. [2020-08-22 04:49:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:49:01,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-22 04:49:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:01,071 INFO L225 Difference]: With dead ends: 744 [2020-08-22 04:49:01,072 INFO L226 Difference]: Without dead ends: 455 [2020-08-22 04:49:01,074 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 [2020-08-22 04:49:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-08-22 04:49:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 329. [2020-08-22 04:49:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-22 04:49:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 412 transitions. [2020-08-22 04:49:01,123 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 412 transitions. Word has length 78 [2020-08-22 04:49:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:01,124 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 412 transitions. [2020-08-22 04:49:01,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:49:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 412 transitions. [2020-08-22 04:49:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:49:01,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:01,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:01,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:49:01,126 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:01,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:01,126 INFO L82 PathProgramCache]: Analyzing trace with hash -156170452, now seen corresponding path program 1 times [2020-08-22 04:49:01,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:01,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105916495] [2020-08-22 04:49:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:49:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:49:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:49:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:49:01,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105916495] [2020-08-22 04:49:01,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:49:01,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:49:01,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464775517] [2020-08-22 04:49:01,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:49:01,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:01,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:49:01,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:49:01,289 INFO L87 Difference]: Start difference. First operand 329 states and 412 transitions. Second operand 10 states. [2020-08-22 04:49:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:02,801 INFO L93 Difference]: Finished difference Result 774 states and 1027 transitions. [2020-08-22 04:49:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:49:02,802 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-22 04:49:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:02,806 INFO L225 Difference]: With dead ends: 774 [2020-08-22 04:49:02,806 INFO L226 Difference]: Without dead ends: 465 [2020-08-22 04:49:02,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:49:02,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-08-22 04:49:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 339. [2020-08-22 04:49:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-08-22 04:49:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 420 transitions. [2020-08-22 04:49:02,849 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 420 transitions. Word has length 78 [2020-08-22 04:49:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:02,849 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 420 transitions. [2020-08-22 04:49:02,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:49:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 420 transitions. [2020-08-22 04:49:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:49:02,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:02,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:02,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:49:02,853 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 118589162, now seen corresponding path program 1 times [2020-08-22 04:49:02,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:02,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405759432] [2020-08-22 04:49:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:02,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:49:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:49:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:49:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:49:03,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405759432] [2020-08-22 04:49:03,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:49:03,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:49:03,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980103131] [2020-08-22 04:49:03,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:49:03,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:03,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:49:03,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:49:03,046 INFO L87 Difference]: Start difference. First operand 339 states and 420 transitions. Second operand 10 states. [2020-08-22 04:49:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:04,508 INFO L93 Difference]: Finished difference Result 920 states and 1216 transitions. [2020-08-22 04:49:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:49:04,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-08-22 04:49:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:04,516 INFO L225 Difference]: With dead ends: 920 [2020-08-22 04:49:04,516 INFO L226 Difference]: Without dead ends: 600 [2020-08-22 04:49:04,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-08-22 04:49:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-22 04:49:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 375. [2020-08-22 04:49:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-08-22 04:49:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 445 transitions. [2020-08-22 04:49:04,573 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 445 transitions. Word has length 78 [2020-08-22 04:49:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:04,574 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 445 transitions. [2020-08-22 04:49:04,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:49:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 445 transitions. [2020-08-22 04:49:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:49:04,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:04,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:04,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:49:04,576 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:04,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:04,576 INFO L82 PathProgramCache]: Analyzing trace with hash 180628776, now seen corresponding path program 1 times [2020-08-22 04:49:04,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:04,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988330680] [2020-08-22 04:49:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:49:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:49:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:49:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:49:04,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988330680] [2020-08-22 04:49:04,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:49:04,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:49:04,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729025223] [2020-08-22 04:49:04,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:49:04,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:04,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:49:04,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:49:04,746 INFO L87 Difference]: Start difference. First operand 375 states and 445 transitions. Second operand 7 states. [2020-08-22 04:49:05,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:05,997 INFO L93 Difference]: Finished difference Result 1208 states and 1535 transitions. [2020-08-22 04:49:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:49:05,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-22 04:49:05,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:06,010 INFO L225 Difference]: With dead ends: 1208 [2020-08-22 04:49:06,010 INFO L226 Difference]: Without dead ends: 853 [2020-08-22 04:49:06,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:49:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-22 04:49:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 751. [2020-08-22 04:49:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-08-22 04:49:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 921 transitions. [2020-08-22 04:49:06,111 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 921 transitions. Word has length 78 [2020-08-22 04:49:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:06,112 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 921 transitions. [2020-08-22 04:49:06,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:49:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 921 transitions. [2020-08-22 04:49:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-22 04:49:06,116 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:06,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:06,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:49:06,118 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:06,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:06,118 INFO L82 PathProgramCache]: Analyzing trace with hash 972462964, now seen corresponding path program 1 times [2020-08-22 04:49:06,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:06,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997889841] [2020-08-22 04:49:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:49:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:49:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:49:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 04:49:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 04:49:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 04:49:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 04:49:06,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997889841] [2020-08-22 04:49:06,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:49:06,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 04:49:06,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047336957] [2020-08-22 04:49:06,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:49:06,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:06,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:49:06,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:49:06,469 INFO L87 Difference]: Start difference. First operand 751 states and 921 transitions. Second operand 9 states. [2020-08-22 04:49:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:08,232 INFO L93 Difference]: Finished difference Result 2122 states and 2794 transitions. [2020-08-22 04:49:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:49:08,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-08-22 04:49:08,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:08,243 INFO L225 Difference]: With dead ends: 2122 [2020-08-22 04:49:08,244 INFO L226 Difference]: Without dead ends: 1391 [2020-08-22 04:49:08,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-08-22 04:49:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-08-22 04:49:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1307. [2020-08-22 04:49:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-08-22 04:49:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1584 transitions. [2020-08-22 04:49:08,357 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1584 transitions. Word has length 123 [2020-08-22 04:49:08,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:08,357 INFO L479 AbstractCegarLoop]: Abstraction has 1307 states and 1584 transitions. [2020-08-22 04:49:08,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:49:08,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1584 transitions. [2020-08-22 04:49:08,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-22 04:49:08,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:08,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:08,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:49:08,361 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:08,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:08,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1319133239, now seen corresponding path program 1 times [2020-08-22 04:49:08,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:08,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180114943] [2020-08-22 04:49:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:49:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:49:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:49:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 04:49:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 04:49:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 04:49:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-22 04:49:08,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180114943] [2020-08-22 04:49:08,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:49:08,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:49:08,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479409611] [2020-08-22 04:49:08,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:49:08,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:08,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:49:08,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:49:08,544 INFO L87 Difference]: Start difference. First operand 1307 states and 1584 transitions. Second operand 9 states. [2020-08-22 04:49:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:10,490 INFO L93 Difference]: Finished difference Result 3361 states and 4209 transitions. [2020-08-22 04:49:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 04:49:10,491 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-08-22 04:49:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:10,502 INFO L225 Difference]: With dead ends: 3361 [2020-08-22 04:49:10,503 INFO L226 Difference]: Without dead ends: 1577 [2020-08-22 04:49:10,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-08-22 04:49:10,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2020-08-22 04:49:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1511. [2020-08-22 04:49:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1511 states. [2020-08-22 04:49:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1789 transitions. [2020-08-22 04:49:10,661 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1789 transitions. Word has length 123 [2020-08-22 04:49:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:10,663 INFO L479 AbstractCegarLoop]: Abstraction has 1511 states and 1789 transitions. [2020-08-22 04:49:10,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:49:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1789 transitions. [2020-08-22 04:49:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 04:49:10,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:10,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:10,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:49:10,669 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:10,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1505336733, now seen corresponding path program 1 times [2020-08-22 04:49:10,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:10,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430528643] [2020-08-22 04:49:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:49:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:49:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:49:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 04:49:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:49:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:49:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 04:49:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 04:49:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:49:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 04:49:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-08-22 04:49:10,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430528643] [2020-08-22 04:49:10,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:49:10,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 04:49:10,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105826306] [2020-08-22 04:49:10,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:49:10,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:10,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:49:10,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:49:10,920 INFO L87 Difference]: Start difference. First operand 1511 states and 1789 transitions. Second operand 9 states. [2020-08-22 04:49:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:12,348 INFO L93 Difference]: Finished difference Result 3075 states and 3746 transitions. [2020-08-22 04:49:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 04:49:12,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2020-08-22 04:49:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:12,358 INFO L225 Difference]: With dead ends: 3075 [2020-08-22 04:49:12,358 INFO L226 Difference]: Without dead ends: 1585 [2020-08-22 04:49:12,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:49:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2020-08-22 04:49:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1505. [2020-08-22 04:49:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-08-22 04:49:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1755 transitions. [2020-08-22 04:49:12,477 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1755 transitions. Word has length 177 [2020-08-22 04:49:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:12,477 INFO L479 AbstractCegarLoop]: Abstraction has 1505 states and 1755 transitions. [2020-08-22 04:49:12,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:49:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1755 transitions. [2020-08-22 04:49:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-22 04:49:12,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:12,482 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:12,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:49:12,482 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:12,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1006491229, now seen corresponding path program 1 times [2020-08-22 04:49:12,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:12,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384664928] [2020-08-22 04:49:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:49:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:49:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:49:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 04:49:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 04:49:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 04:49:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 04:49:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 04:49:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:49:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 04:49:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-22 04:49:12,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384664928] [2020-08-22 04:49:12,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:49:12,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:49:12,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970798399] [2020-08-22 04:49:12,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:49:12,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:49:12,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:49:12,749 INFO L87 Difference]: Start difference. First operand 1505 states and 1755 transitions. Second operand 10 states. [2020-08-22 04:49:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:14,890 INFO L93 Difference]: Finished difference Result 3514 states and 4187 transitions. [2020-08-22 04:49:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 04:49:14,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 178 [2020-08-22 04:49:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:14,902 INFO L225 Difference]: With dead ends: 3514 [2020-08-22 04:49:14,902 INFO L226 Difference]: Without dead ends: 1021 [2020-08-22 04:49:14,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-08-22 04:49:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-08-22 04:49:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 985. [2020-08-22 04:49:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-08-22 04:49:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1123 transitions. [2020-08-22 04:49:15,024 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1123 transitions. Word has length 178 [2020-08-22 04:49:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:15,025 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1123 transitions. [2020-08-22 04:49:15,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:49:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1123 transitions. [2020-08-22 04:49:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-22 04:49:15,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:15,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:15,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:49:15,029 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:15,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2053123678, now seen corresponding path program 1 times [2020-08-22 04:49:15,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:15,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061533478] [2020-08-22 04:49:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:49:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:49:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:49:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:49:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:49:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 04:49:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 04:49:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 04:49:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:49:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 04:49:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-08-22 04:49:15,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061533478] [2020-08-22 04:49:15,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:49:15,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:49:15,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500868678] [2020-08-22 04:49:15,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:49:15,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:15,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:49:15,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:49:15,419 INFO L87 Difference]: Start difference. First operand 985 states and 1123 transitions. Second operand 12 states. [2020-08-22 04:49:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:17,588 INFO L93 Difference]: Finished difference Result 1223 states and 1418 transitions. [2020-08-22 04:49:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:49:17,589 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 178 [2020-08-22 04:49:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:17,595 INFO L225 Difference]: With dead ends: 1223 [2020-08-22 04:49:17,596 INFO L226 Difference]: Without dead ends: 1220 [2020-08-22 04:49:17,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-08-22 04:49:17,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-22 04:49:17,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1172. [2020-08-22 04:49:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-08-22 04:49:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1335 transitions. [2020-08-22 04:49:17,695 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1335 transitions. Word has length 178 [2020-08-22 04:49:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:17,695 INFO L479 AbstractCegarLoop]: Abstraction has 1172 states and 1335 transitions. [2020-08-22 04:49:17,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:49:17,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1335 transitions. [2020-08-22 04:49:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-08-22 04:49:17,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:17,699 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:17,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:49:17,700 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:17,700 INFO L82 PathProgramCache]: Analyzing trace with hash 5197958, now seen corresponding path program 1 times [2020-08-22 04:49:17,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:17,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883181331] [2020-08-22 04:49:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:49:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:49:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:49:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:49:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:49:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 04:49:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 04:49:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 04:49:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:49:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 04:49:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-08-22 04:49:17,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883181331] [2020-08-22 04:49:17,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:49:17,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 04:49:17,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186046702] [2020-08-22 04:49:17,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:49:17,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:17,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:49:17,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:49:17,985 INFO L87 Difference]: Start difference. First operand 1172 states and 1335 transitions. Second operand 9 states. [2020-08-22 04:49:19,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:19,008 INFO L93 Difference]: Finished difference Result 2003 states and 2338 transitions. [2020-08-22 04:49:19,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:49:19,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-08-22 04:49:19,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:19,016 INFO L225 Difference]: With dead ends: 2003 [2020-08-22 04:49:19,016 INFO L226 Difference]: Without dead ends: 1220 [2020-08-22 04:49:19,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:49:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-22 04:49:19,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1186. [2020-08-22 04:49:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186 states. [2020-08-22 04:49:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1353 transitions. [2020-08-22 04:49:19,114 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1353 transitions. Word has length 182 [2020-08-22 04:49:19,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:19,115 INFO L479 AbstractCegarLoop]: Abstraction has 1186 states and 1353 transitions. [2020-08-22 04:49:19,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:49:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1353 transitions. [2020-08-22 04:49:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-22 04:49:19,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:19,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:19,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 04:49:19,118 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:19,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1390323253, now seen corresponding path program 1 times [2020-08-22 04:49:19,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:19,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16100941] [2020-08-22 04:49:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:49:19,171 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:49:19,171 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:49:19,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 04:49:19,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:49:19 BoogieIcfgContainer [2020-08-22 04:49:19,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:49:19,232 INFO L168 Benchmark]: Toolchain (without parser) took 26853.41 ms. Allocated memory was 140.0 MB in the beginning and 529.0 MB in the end (delta: 389.0 MB). Free memory was 101.3 MB in the beginning and 299.7 MB in the end (delta: -198.4 MB). Peak memory consumption was 190.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:19,233 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:49:19,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.56 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.1 MB in the beginning and 180.4 MB in the end (delta: -79.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:19,234 INFO L168 Benchmark]: Boogie Preprocessor took 48.26 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 178.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:19,236 INFO L168 Benchmark]: RCFGBuilder took 570.79 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 145.5 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:19,241 INFO L168 Benchmark]: TraceAbstraction took 25805.78 ms. Allocated memory was 201.9 MB in the beginning and 529.0 MB in the end (delta: 327.2 MB). Free memory was 144.8 MB in the beginning and 299.7 MB in the end (delta: -154.9 MB). Peak memory consumption was 172.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:19,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 423.56 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.1 MB in the beginning and 180.4 MB in the end (delta: -79.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.26 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 178.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 570.79 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 145.5 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25805.78 ms. Allocated memory was 201.9 MB in the beginning and 529.0 MB in the end (delta: 327.2 MB). Free memory was 144.8 MB in the beginning and 299.7 MB in the end (delta: -154.9 MB). Peak memory consumption was 172.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int m_pc = 0; [L15] int t1_pc = 0; [L16] int m_st ; [L17] int t1_st ; [L18] int m_i ; [L19] int t1_i ; [L20] int M_E = 2; [L21] int T1_E = 2; [L22] int E_M = 2; [L23] int E_1 = 2; [L27] int token ; [L29] int local ; [L475] int __retres1 ; [L479] CALL init_model() [L390] m_i = 1 [L391] t1_i = 1 [L479] RET init_model() [L480] CALL start_simulation() [L416] int kernel_st ; [L417] int tmp ; [L418] int tmp___0 ; [L422] kernel_st = 0 [L423] FCALL update_channels() [L424] CALL init_threads() [L172] COND TRUE m_i == 1 [L173] m_st = 0 [L177] COND TRUE t1_i == 1 [L178] t1_st = 0 [L424] RET init_threads() [L425] CALL fire_delta_events() [L261] COND FALSE !(M_E == 0) [L266] COND FALSE !(T1_E == 0) [L271] COND FALSE !(E_M == 0) [L276] COND FALSE !(E_1 == 0) [L425] RET fire_delta_events() [L426] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND FALSE !(m_pc == 1) [L136] __retres1 = 0 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND FALSE !(t1_pc == 1) [L155] __retres1 = 0 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) [L426] RET activate_threads() [L427] CALL reset_delta_events() [L289] COND FALSE !(M_E == 1) [L294] COND FALSE !(T1_E == 1) [L299] COND FALSE !(E_M == 1) [L304] COND FALSE !(E_1 == 1) [L427] RET reset_delta_events() [L430] COND TRUE 1 [L433] kernel_st = 1 [L434] CALL eval() [L208] int tmp ; [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND FALSE !(\read(tmp_ndt_1)) [L236] COND TRUE t1_st == 0 [L237] int tmp_ndt_2; [L238] tmp_ndt_2 = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp_ndt_2) [L241] t1_st = 1 [L242] CALL transmit1() [L90] COND TRUE t1_pc == 0 [L101] COND TRUE 1 [L103] t1_pc = 1 [L104] t1_st = 2 [L242] RET transmit1() [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp_ndt_1) [L227] m_st = 1 [L228] CALL master() [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND TRUE m_pc == 0 [L45] COND TRUE 1 [L48] token = __VERIFIER_nondet_int() [L49] local = token [L50] E_1 = 1 [L51] CALL immediate_notify() [L343] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND FALSE !(m_pc == 1) [L136] __retres1 = 0 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND TRUE t1_pc == 1 [L146] COND TRUE E_1 == 1 [L147] __retres1 = 1 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND TRUE \read(tmp___0) [L330] t1_st = 0 [L343] RET activate_threads() [L51] RET immediate_notify() [L52] E_1 = 2 [L53] m_pc = 1 [L54] m_st = 2 [L228] RET master() [L236] COND TRUE t1_st == 0 [L237] int tmp_ndt_2; [L238] tmp_ndt_2 = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp_ndt_2) [L241] t1_st = 1 [L242] CALL transmit1() [L90] COND FALSE !(t1_pc == 0) [L93] COND TRUE t1_pc == 1 [L109] token += 1 [L110] E_M = 1 [L111] CALL immediate_notify() [L343] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND TRUE m_pc == 1 [L127] COND TRUE E_M == 1 [L128] __retres1 = 1 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND TRUE \read(tmp) [L322] m_st = 0 [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND TRUE t1_pc == 1 [L146] COND FALSE !(E_1 == 1) [L155] __retres1 = 0 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) [L343] RET activate_threads() [L111] RET immediate_notify() [L112] E_M = 2 [L101] COND TRUE 1 [L103] t1_pc = 1 [L104] t1_st = 2 [L242] RET transmit1() [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp_ndt_1) [L227] m_st = 1 [L228] CALL master() [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND FALSE !(m_pc == 0) [L37] COND TRUE m_pc == 1 [L59] COND FALSE !(token != local + 1) [L64] COND TRUE tmp_var <= 5 [L65] COND TRUE tmp_var >= 5 [L70] COND TRUE tmp_var <= 5 [L71] COND TRUE tmp_var >= 5 [L72] COND TRUE tmp_var == 5 [L73] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.6s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 20.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2071 SDtfs, 7647 SDslu, 593 SDs, 0 SdLazy, 12290 SolverSat, 4255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 436 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1511occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 1320 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1690 NumberOfCodeBlocks, 1690 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1494 ConstructedInterpolants, 0 QuantifiedInterpolants, 452054 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 474/494 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...