/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=BIGGEST --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/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:29:39,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:29:39,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:29:39,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:29:39,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:29:39,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:29:39,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:29:39,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:29:39,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:29:39,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:29:39,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:29:39,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:29:39,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:29:39,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:29:39,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:29:39,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:29:39,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:29:39,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:29:39,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:29:39,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:29:39,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:29:39,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:29:39,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:29:39,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:29:39,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:29:39,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:29:39,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:29:39,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:29:39,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:29:39,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:29:39,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:29:39,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:29:39,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:29:39,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:29:39,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:29:39,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:29:39,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:29:39,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:29:39,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:29:39,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:29:39,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:29:39,967 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 [2020-08-21 17:29:39,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:29:39,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:29:39,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:29:39,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:29:39,990 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:29:39,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:29:39,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:29:39,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:29:39,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:29:39,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:29:39,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:29:39,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:29:39,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:29:39,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:29:39,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:29:39,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:29:39,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:29:39,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:29:39,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:29:39,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:29:39,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:29:39,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:29:39,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:29:39,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:29:39,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:29:39,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:29:39,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:29:39,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:29:39,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:29:39,995 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=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:29:40,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:29:40,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:29:40,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:29:40,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:29:40,347 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:29:40,348 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-21 17:29:40,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d60471d6/9e529d37338f495387262a88b9cbbd31/FLAG04bcf6ead [2020-08-21 17:29:40,918 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:29:40,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-21 17:29:40,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d60471d6/9e529d37338f495387262a88b9cbbd31/FLAG04bcf6ead [2020-08-21 17:29:41,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d60471d6/9e529d37338f495387262a88b9cbbd31 [2020-08-21 17:29:41,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:29:41,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:29:41,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:29:41,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:29:41,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:29:41,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:29:41" (1/1) ... [2020-08-21 17:29:41,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d819d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41, skipping insertion in model container [2020-08-21 17:29:41,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:29:41" (1/1) ... [2020-08-21 17:29:41,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:29:41,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:29:41,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:29:41,536 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:29:41,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:29:41,721 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:29:41,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41 WrapperNode [2020-08-21 17:29:41,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:29:41,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:29:41,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:29:41,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:29:41,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41" (1/1) ... [2020-08-21 17:29:41,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41" (1/1) ... [2020-08-21 17:29:41,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41" (1/1) ... [2020-08-21 17:29:41,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41" (1/1) ... [2020-08-21 17:29:41,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41" (1/1) ... [2020-08-21 17:29:41,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41" (1/1) ... [2020-08-21 17:29:41,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41" (1/1) ... [2020-08-21 17:29:41,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:29:41,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:29:41,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:29:41,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:29:41,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41" (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 [2020-08-21 17:29:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:29:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:29:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-21 17:29:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-21 17:29:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-21 17:29:41,849 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-21 17:29:41,849 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-21 17:29:41,849 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-21 17:29:41,849 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-21 17:29:41,849 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-21 17:29:41,849 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-21 17:29:41,850 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-21 17:29:41,850 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-21 17:29:41,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-21 17:29:41,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-21 17:29:41,850 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-21 17:29:41,850 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-21 17:29:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-21 17:29:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-21 17:29:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-21 17:29:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-21 17:29:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-21 17:29:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:29:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:29:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:29:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-21 17:29:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-21 17:29:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-21 17:29:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-21 17:29:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-21 17:29:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-21 17:29:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-21 17:29:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-21 17:29:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-21 17:29:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-21 17:29:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-21 17:29:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-21 17:29:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-21 17:29:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-21 17:29:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-21 17:29:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-21 17:29:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-21 17:29:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-21 17:29:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-21 17:29:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-21 17:29:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:29:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:29:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:29:42,367 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:29:42,368 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 17:29:42,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:29:42 BoogieIcfgContainer [2020-08-21 17:29:42,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:29:42,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:29:42,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:29:42,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:29:42,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:29:41" (1/3) ... [2020-08-21 17:29:42,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ab7986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:29:42, skipping insertion in model container [2020-08-21 17:29:42,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:29:41" (2/3) ... [2020-08-21 17:29:42,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ab7986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:29:42, skipping insertion in model container [2020-08-21 17:29:42,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:29:42" (3/3) ... [2020-08-21 17:29:42,392 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-08-21 17:29:42,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:29:42,414 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:29:42,429 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:29:42,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:29:42,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:29:42,467 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:29:42,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:29:42,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:29:42,467 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:29:42,468 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:29:42,468 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:29:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 17:29:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:29:42,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:42,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:42,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:42,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1996614335, now seen corresponding path program 1 times [2020-08-21 17:29:42,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:42,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572185329] [2020-08-21 17:29:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:29:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:29:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:29:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:42,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:29:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:29:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:43,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:29:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:29:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:29:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:29:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:29:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:29:43,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572185329] [2020-08-21 17:29:43,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:43,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:29:43,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681919195] [2020-08-21 17:29:43,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:29:43,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:43,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:29:43,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:29:43,149 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 8 states. [2020-08-21 17:29:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:44,781 INFO L93 Difference]: Finished difference Result 412 states and 626 transitions. [2020-08-21 17:29:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:29:44,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-21 17:29:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:44,818 INFO L225 Difference]: With dead ends: 412 [2020-08-21 17:29:44,818 INFO L226 Difference]: Without dead ends: 247 [2020-08-21 17:29:44,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:29:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-08-21 17:29:44,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 160. [2020-08-21 17:29:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-21 17:29:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 212 transitions. [2020-08-21 17:29:44,914 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 212 transitions. Word has length 90 [2020-08-21 17:29:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:44,915 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 212 transitions. [2020-08-21 17:29:44,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:29:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 212 transitions. [2020-08-21 17:29:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:29:44,920 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:44,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:44,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:29:44,921 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:44,922 INFO L82 PathProgramCache]: Analyzing trace with hash -387310403, now seen corresponding path program 1 times [2020-08-21 17:29:44,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:44,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590814153] [2020-08-21 17:29:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:29:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:29:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:29:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:29:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:29:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:29:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:29:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:29:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:29:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:29:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:29:45,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590814153] [2020-08-21 17:29:45,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:45,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:29:45,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198069239] [2020-08-21 17:29:45,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:29:45,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:45,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:29:45,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:29:45,302 INFO L87 Difference]: Start difference. First operand 160 states and 212 transitions. Second operand 9 states. [2020-08-21 17:29:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:47,471 INFO L93 Difference]: Finished difference Result 579 states and 839 transitions. [2020-08-21 17:29:47,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:29:47,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-08-21 17:29:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:47,477 INFO L225 Difference]: With dead ends: 579 [2020-08-21 17:29:47,477 INFO L226 Difference]: Without dead ends: 439 [2020-08-21 17:29:47,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:29:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-21 17:29:47,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 294. [2020-08-21 17:29:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 17:29:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 393 transitions. [2020-08-21 17:29:47,545 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 393 transitions. Word has length 90 [2020-08-21 17:29:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:47,545 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 393 transitions. [2020-08-21 17:29:47,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:29:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 393 transitions. [2020-08-21 17:29:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:29:47,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:47,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:47,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:29:47,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:47,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:47,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1952833149, now seen corresponding path program 1 times [2020-08-21 17:29:47,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:47,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720183497] [2020-08-21 17:29:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:29:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:29:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:29:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:29:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:29:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:29:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:29:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:29:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:29:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:29:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:29:47,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720183497] [2020-08-21 17:29:47,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:47,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:29:47,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108487609] [2020-08-21 17:29:47,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:29:47,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:47,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:29:47,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:29:47,807 INFO L87 Difference]: Start difference. First operand 294 states and 393 transitions. Second operand 10 states. [2020-08-21 17:29:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:49,087 INFO L93 Difference]: Finished difference Result 704 states and 993 transitions. [2020-08-21 17:29:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:29:49,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 17:29:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:49,096 INFO L225 Difference]: With dead ends: 704 [2020-08-21 17:29:49,096 INFO L226 Difference]: Without dead ends: 430 [2020-08-21 17:29:49,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:29:49,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-08-21 17:29:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 294. [2020-08-21 17:29:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 17:29:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 386 transitions. [2020-08-21 17:29:49,175 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 386 transitions. Word has length 90 [2020-08-21 17:29:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:49,178 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 386 transitions. [2020-08-21 17:29:49,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:29:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 386 transitions. [2020-08-21 17:29:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:29:49,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:49,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:49,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:29:49,185 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:49,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:49,186 INFO L82 PathProgramCache]: Analyzing trace with hash 227206333, now seen corresponding path program 1 times [2020-08-21 17:29:49,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:49,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815109735] [2020-08-21 17:29:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:29:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:29:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:29:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:29:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:29:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:29:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:29:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:29:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:29:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:29:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:29:49,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815109735] [2020-08-21 17:29:49,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:49,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:29:49,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400228625] [2020-08-21 17:29:49,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:29:49,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:49,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:29:49,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:29:49,396 INFO L87 Difference]: Start difference. First operand 294 states and 386 transitions. Second operand 10 states. [2020-08-21 17:29:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:50,627 INFO L93 Difference]: Finished difference Result 700 states and 971 transitions. [2020-08-21 17:29:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:29:50,627 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 17:29:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:50,634 INFO L225 Difference]: With dead ends: 700 [2020-08-21 17:29:50,634 INFO L226 Difference]: Without dead ends: 426 [2020-08-21 17:29:50,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:29:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-21 17:29:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 294. [2020-08-21 17:29:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 17:29:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 379 transitions. [2020-08-21 17:29:50,686 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 379 transitions. Word has length 90 [2020-08-21 17:29:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:50,686 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 379 transitions. [2020-08-21 17:29:50,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:29:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 379 transitions. [2020-08-21 17:29:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:29:50,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:50,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:50,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:29:50,691 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:50,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1418466941, now seen corresponding path program 1 times [2020-08-21 17:29:50,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:50,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9266670] [2020-08-21 17:29:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:29:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:29:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:29:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:29:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:29:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:29:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:29:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:29:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:29:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:29:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:29:50,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9266670] [2020-08-21 17:29:50,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:50,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:29:50,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390660693] [2020-08-21 17:29:50,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:29:50,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:29:50,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:29:50,897 INFO L87 Difference]: Start difference. First operand 294 states and 379 transitions. Second operand 10 states. [2020-08-21 17:29:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:52,731 INFO L93 Difference]: Finished difference Result 855 states and 1230 transitions. [2020-08-21 17:29:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:29:52,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 17:29:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:52,737 INFO L225 Difference]: With dead ends: 855 [2020-08-21 17:29:52,737 INFO L226 Difference]: Without dead ends: 581 [2020-08-21 17:29:52,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-21 17:29:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-08-21 17:29:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 366. [2020-08-21 17:29:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-08-21 17:29:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 457 transitions. [2020-08-21 17:29:52,797 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 457 transitions. Word has length 90 [2020-08-21 17:29:52,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:52,798 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 457 transitions. [2020-08-21 17:29:52,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:29:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 457 transitions. [2020-08-21 17:29:52,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:29:52,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:52,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:52,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:29:52,800 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:52,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1504622653, now seen corresponding path program 1 times [2020-08-21 17:29:52,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:52,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246183171] [2020-08-21 17:29:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:52,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:52,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:29:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:52,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:29:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:52,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:29:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:29:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:29:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:29:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:29:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:29:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:29:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:53,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:29:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:29:53,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246183171] [2020-08-21 17:29:53,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:53,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:29:53,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124024983] [2020-08-21 17:29:53,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:29:53,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:53,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:29:53,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:29:53,024 INFO L87 Difference]: Start difference. First operand 366 states and 457 transitions. Second operand 10 states. [2020-08-21 17:29:54,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:54,678 INFO L93 Difference]: Finished difference Result 877 states and 1164 transitions. [2020-08-21 17:29:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:29:54,679 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 17:29:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:54,684 INFO L225 Difference]: With dead ends: 877 [2020-08-21 17:29:54,684 INFO L226 Difference]: Without dead ends: 532 [2020-08-21 17:29:54,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:29:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-21 17:29:54,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 376. [2020-08-21 17:29:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-08-21 17:29:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 465 transitions. [2020-08-21 17:29:54,735 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 465 transitions. Word has length 90 [2020-08-21 17:29:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:54,736 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 465 transitions. [2020-08-21 17:29:54,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:29:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 465 transitions. [2020-08-21 17:29:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:29:54,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:54,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:54,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:29:54,739 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:54,740 INFO L82 PathProgramCache]: Analyzing trace with hash -523963457, now seen corresponding path program 1 times [2020-08-21 17:29:54,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:54,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539121207] [2020-08-21 17:29:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:29:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:29:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:29:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:29:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:29:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:29:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:29:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:29:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:29:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:54,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:29:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:29:55,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539121207] [2020-08-21 17:29:55,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:55,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:29:55,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134808150] [2020-08-21 17:29:55,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:29:55,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:55,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:29:55,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:29:55,012 INFO L87 Difference]: Start difference. First operand 376 states and 465 transitions. Second operand 10 states. [2020-08-21 17:29:56,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:56,796 INFO L93 Difference]: Finished difference Result 915 states and 1208 transitions. [2020-08-21 17:29:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:29:56,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 17:29:56,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:56,801 INFO L225 Difference]: With dead ends: 915 [2020-08-21 17:29:56,802 INFO L226 Difference]: Without dead ends: 560 [2020-08-21 17:29:56,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:29:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-08-21 17:29:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 396. [2020-08-21 17:29:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-08-21 17:29:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 485 transitions. [2020-08-21 17:29:56,846 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 485 transitions. Word has length 90 [2020-08-21 17:29:56,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:56,846 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 485 transitions. [2020-08-21 17:29:56,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:29:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 485 transitions. [2020-08-21 17:29:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:29:56,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:56,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:56,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:29:56,848 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:56,849 INFO L82 PathProgramCache]: Analyzing trace with hash -275816963, now seen corresponding path program 1 times [2020-08-21 17:29:56,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:56,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878853852] [2020-08-21 17:29:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:29:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:56,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:29:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:29:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:56,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:29:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:56,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:29:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:57,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:29:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:29:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:57,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:29:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:57,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:29:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:29:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:29:57,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878853852] [2020-08-21 17:29:57,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:57,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:29:57,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219928357] [2020-08-21 17:29:57,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:29:57,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:57,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:29:57,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:29:57,102 INFO L87 Difference]: Start difference. First operand 396 states and 485 transitions. Second operand 10 states. [2020-08-21 17:29:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:58,721 INFO L93 Difference]: Finished difference Result 939 states and 1222 transitions. [2020-08-21 17:29:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:29:58,722 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 17:29:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:58,727 INFO L225 Difference]: With dead ends: 939 [2020-08-21 17:29:58,727 INFO L226 Difference]: Without dead ends: 564 [2020-08-21 17:29:58,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:29:58,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-21 17:29:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 406. [2020-08-21 17:29:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-08-21 17:29:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 493 transitions. [2020-08-21 17:29:58,784 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 493 transitions. Word has length 90 [2020-08-21 17:29:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:58,785 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 493 transitions. [2020-08-21 17:29:58,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:29:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 493 transitions. [2020-08-21 17:29:58,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:29:58,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:29:58,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:29:58,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:29:58,787 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:29:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:29:58,787 INFO L82 PathProgramCache]: Analyzing trace with hash -348203521, now seen corresponding path program 1 times [2020-08-21 17:29:58,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:29:58,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152558170] [2020-08-21 17:29:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:29:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:29:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:29:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:29:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:29:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:29:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:29:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:29:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:29:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:29:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:29:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:29:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:29:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:29:58,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152558170] [2020-08-21 17:29:58,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:29:58,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:29:58,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990602593] [2020-08-21 17:29:58,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:29:58,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:29:58,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:29:58,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:29:58,978 INFO L87 Difference]: Start difference. First operand 406 states and 493 transitions. Second operand 10 states. [2020-08-21 17:30:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:30:00,735 INFO L93 Difference]: Finished difference Result 1144 states and 1493 transitions. [2020-08-21 17:30:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 17:30:00,736 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 17:30:00,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:30:00,742 INFO L225 Difference]: With dead ends: 1144 [2020-08-21 17:30:00,742 INFO L226 Difference]: Without dead ends: 758 [2020-08-21 17:30:00,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-08-21 17:30:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-21 17:30:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 467. [2020-08-21 17:30:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-08-21 17:30:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 547 transitions. [2020-08-21 17:30:00,790 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 547 transitions. Word has length 90 [2020-08-21 17:30:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:30:00,791 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 547 transitions. [2020-08-21 17:30:00,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:30:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 547 transitions. [2020-08-21 17:30:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 17:30:00,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:30:00,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:30:00,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:30:00,793 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:30:00,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:30:00,793 INFO L82 PathProgramCache]: Analyzing trace with hash -286163907, now seen corresponding path program 1 times [2020-08-21 17:30:00,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:30:00,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621611953] [2020-08-21 17:30:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:30:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:30:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:30:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:30:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:30:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:30:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:30:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:30:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:30:00,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621611953] [2020-08-21 17:30:00,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:30:00,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:30:00,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789470962] [2020-08-21 17:30:00,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:30:00,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:30:00,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:30:00,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:30:00,922 INFO L87 Difference]: Start difference. First operand 467 states and 547 transitions. Second operand 7 states. [2020-08-21 17:30:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:30:02,492 INFO L93 Difference]: Finished difference Result 1503 states and 1877 transitions. [2020-08-21 17:30:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:30:02,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-21 17:30:02,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:30:02,500 INFO L225 Difference]: With dead ends: 1503 [2020-08-21 17:30:02,500 INFO L226 Difference]: Without dead ends: 1058 [2020-08-21 17:30:02,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:30:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-08-21 17:30:02,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 847. [2020-08-21 17:30:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-21 17:30:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1018 transitions. [2020-08-21 17:30:02,584 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1018 transitions. Word has length 90 [2020-08-21 17:30:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:30:02,585 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1018 transitions. [2020-08-21 17:30:02,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:30:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1018 transitions. [2020-08-21 17:30:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 17:30:02,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:30:02,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:30:02,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:30:02,587 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:30:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:30:02,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1417763379, now seen corresponding path program 1 times [2020-08-21 17:30:02,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:30:02,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182820995] [2020-08-21 17:30:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:30:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:30:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:30:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:30:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:30:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:30:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:30:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:30:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:30:02,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182820995] [2020-08-21 17:30:02,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:30:02,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:30:02,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525581405] [2020-08-21 17:30:02,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:30:02,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:30:02,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:30:02,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:30:02,728 INFO L87 Difference]: Start difference. First operand 847 states and 1018 transitions. Second operand 7 states. [2020-08-21 17:30:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:30:04,433 INFO L93 Difference]: Finished difference Result 2813 states and 3701 transitions. [2020-08-21 17:30:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:30:04,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-08-21 17:30:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:30:04,449 INFO L225 Difference]: With dead ends: 2813 [2020-08-21 17:30:04,449 INFO L226 Difference]: Without dead ends: 1993 [2020-08-21 17:30:04,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:30:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-08-21 17:30:04,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1710. [2020-08-21 17:30:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1710 states. [2020-08-21 17:30:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2141 transitions. [2020-08-21 17:30:04,624 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2141 transitions. Word has length 91 [2020-08-21 17:30:04,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:30:04,624 INFO L479 AbstractCegarLoop]: Abstraction has 1710 states and 2141 transitions. [2020-08-21 17:30:04,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:30:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2141 transitions. [2020-08-21 17:30:04,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-21 17:30:04,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:30:04,627 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:30:04,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:30:04,628 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:30:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:30:04,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1387972843, now seen corresponding path program 1 times [2020-08-21 17:30:04,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:30:04,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361054488] [2020-08-21 17:30:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:30:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:30:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:30:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:30:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:30:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:30:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:30:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:30:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 17:30:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 17:30:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 17:30:04,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361054488] [2020-08-21 17:30:04,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:30:04,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:30:04,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307615158] [2020-08-21 17:30:04,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:30:04,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:30:04,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:30:04,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:30:04,792 INFO L87 Difference]: Start difference. First operand 1710 states and 2141 transitions. Second operand 9 states. [2020-08-21 17:30:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:30:06,208 INFO L93 Difference]: Finished difference Result 3845 states and 5084 transitions. [2020-08-21 17:30:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:30:06,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-08-21 17:30:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:30:06,222 INFO L225 Difference]: With dead ends: 3845 [2020-08-21 17:30:06,223 INFO L226 Difference]: Without dead ends: 2157 [2020-08-21 17:30:06,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-08-21 17:30:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-08-21 17:30:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1767. [2020-08-21 17:30:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-08-21 17:30:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2232 transitions. [2020-08-21 17:30:06,509 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2232 transitions. Word has length 111 [2020-08-21 17:30:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:30:06,510 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 2232 transitions. [2020-08-21 17:30:06,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:30:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2232 transitions. [2020-08-21 17:30:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-21 17:30:06,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:30:06,513 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:30:06,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 17:30:06,515 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:30:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:30:06,515 INFO L82 PathProgramCache]: Analyzing trace with hash 36587625, now seen corresponding path program 1 times [2020-08-21 17:30:06,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:30:06,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750962658] [2020-08-21 17:30:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:30:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:30:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:30:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:30:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:30:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:30:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:30:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:30:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 17:30:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 17:30:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 17:30:06,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750962658] [2020-08-21 17:30:06,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:30:06,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:30:06,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836317889] [2020-08-21 17:30:06,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:30:06,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:30:06,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:30:06,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:30:06,692 INFO L87 Difference]: Start difference. First operand 1767 states and 2232 transitions. Second operand 8 states. [2020-08-21 17:30:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:30:08,846 INFO L93 Difference]: Finished difference Result 5835 states and 7942 transitions. [2020-08-21 17:30:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:30:08,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-08-21 17:30:08,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:30:08,866 INFO L225 Difference]: With dead ends: 5835 [2020-08-21 17:30:08,866 INFO L226 Difference]: Without dead ends: 3120 [2020-08-21 17:30:08,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:30:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-08-21 17:30:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2788. [2020-08-21 17:30:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2020-08-21 17:30:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3646 transitions. [2020-08-21 17:30:09,163 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3646 transitions. Word has length 111 [2020-08-21 17:30:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:30:09,163 INFO L479 AbstractCegarLoop]: Abstraction has 2788 states and 3646 transitions. [2020-08-21 17:30:09,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:30:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3646 transitions. [2020-08-21 17:30:09,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 17:30:09,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:30:09,169 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, 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, 1, 1] [2020-08-21 17:30:09,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 17:30:09,170 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:30:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:30:09,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1178118941, now seen corresponding path program 1 times [2020-08-21 17:30:09,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:30:09,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585461573] [2020-08-21 17:30:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:30:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:30:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:30:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:30:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:30:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:30:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:30:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:30:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 17:30:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 17:30:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 17:30:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 17:30:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-08-21 17:30:09,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585461573] [2020-08-21 17:30:09,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:30:09,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:30:09,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752497800] [2020-08-21 17:30:09,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:30:09,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:30:09,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:30:09,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:30:09,397 INFO L87 Difference]: Start difference. First operand 2788 states and 3646 transitions. Second operand 9 states. [2020-08-21 17:30:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:30:12,287 INFO L93 Difference]: Finished difference Result 8089 states and 11637 transitions. [2020-08-21 17:30:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:30:12,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2020-08-21 17:30:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:30:12,336 INFO L225 Difference]: With dead ends: 8089 [2020-08-21 17:30:12,336 INFO L226 Difference]: Without dead ends: 5323 [2020-08-21 17:30:12,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-08-21 17:30:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-08-21 17:30:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 4852. [2020-08-21 17:30:13,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4852 states. [2020-08-21 17:30:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6633 transitions. [2020-08-21 17:30:13,245 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6633 transitions. Word has length 155 [2020-08-21 17:30:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:30:13,246 INFO L479 AbstractCegarLoop]: Abstraction has 4852 states and 6633 transitions. [2020-08-21 17:30:13,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:30:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6633 transitions. [2020-08-21 17:30:13,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 17:30:13,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:30:13,256 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, 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, 1] [2020-08-21 17:30:13,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 17:30:13,257 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:30:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:30:13,258 INFO L82 PathProgramCache]: Analyzing trace with hash -390866386, now seen corresponding path program 1 times [2020-08-21 17:30:13,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:30:13,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63964580] [2020-08-21 17:30:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:30:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:30:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:30:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:30:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:30:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:30:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:30:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:30:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 17:30:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 17:30:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 17:30:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 17:30:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-08-21 17:30:13,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63964580] [2020-08-21 17:30:13,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:30:13,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:30:13,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849845357] [2020-08-21 17:30:13,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:30:13,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:30:13,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:30:13,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:30:13,771 INFO L87 Difference]: Start difference. First operand 4852 states and 6633 transitions. Second operand 10 states. [2020-08-21 17:30:17,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:30:17,178 INFO L93 Difference]: Finished difference Result 12975 states and 19533 transitions. [2020-08-21 17:30:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 17:30:17,178 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-21 17:30:17,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:30:17,223 INFO L225 Difference]: With dead ends: 12975 [2020-08-21 17:30:17,223 INFO L226 Difference]: Without dead ends: 6726 [2020-08-21 17:30:17,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-08-21 17:30:17,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-08-21 17:30:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6174. [2020-08-21 17:30:17,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-08-21 17:30:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 8297 transitions. [2020-08-21 17:30:17,958 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 8297 transitions. Word has length 156 [2020-08-21 17:30:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:30:17,959 INFO L479 AbstractCegarLoop]: Abstraction has 6174 states and 8297 transitions. [2020-08-21 17:30:17,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:30:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 8297 transitions. [2020-08-21 17:30:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-21 17:30:17,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:30:17,969 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, 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:30:17,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 17:30:17,969 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:30:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:30:17,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1382123670, now seen corresponding path program 1 times [2020-08-21 17:30:17,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:30:17,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161657584] [2020-08-21 17:30:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:30:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:30:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:30:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:30:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 17:30:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 17:30:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:30:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:30:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:30:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 17:30:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 17:30:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 17:30:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 17:30:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:30:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-21 17:30:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 17:30:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:30:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:30:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:30:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 17:30:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:30:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-21 17:30:18,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161657584] [2020-08-21 17:30:18,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:30:18,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 17:30:18,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348024635] [2020-08-21 17:30:18,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:30:18,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:30:18,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:30:18,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:30:18,342 INFO L87 Difference]: Start difference. First operand 6174 states and 8297 transitions. Second operand 11 states. [2020-08-21 17:30:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:30:21,139 INFO L93 Difference]: Finished difference Result 12270 states and 16979 transitions. [2020-08-21 17:30:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 17:30:21,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 207 [2020-08-21 17:30:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:30:21,161 INFO L225 Difference]: With dead ends: 12270 [2020-08-21 17:30:21,161 INFO L226 Difference]: Without dead ends: 3143 [2020-08-21 17:30:21,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2020-08-21 17:30:21,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-08-21 17:30:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2950. [2020-08-21 17:30:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2950 states. [2020-08-21 17:30:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3443 transitions. [2020-08-21 17:30:21,535 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3443 transitions. Word has length 207 [2020-08-21 17:30:21,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:30:21,535 INFO L479 AbstractCegarLoop]: Abstraction has 2950 states and 3443 transitions. [2020-08-21 17:30:21,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:30:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3443 transitions. [2020-08-21 17:30:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-08-21 17:30:21,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:30:21,540 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:30:21,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 17:30:21,540 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:30:21,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:30:21,541 INFO L82 PathProgramCache]: Analyzing trace with hash 89354437, now seen corresponding path program 1 times [2020-08-21 17:30:21,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:30:21,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003184972] [2020-08-21 17:30:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:30:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:30:21,573 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:30:21,573 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:30:21,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 17:30:21,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:30:21 BoogieIcfgContainer [2020-08-21 17:30:21,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:30:21,617 INFO L168 Benchmark]: Toolchain (without parser) took 40342.14 ms. Allocated memory was 141.0 MB in the beginning and 794.3 MB in the end (delta: 653.3 MB). Free memory was 104.3 MB in the beginning and 548.8 MB in the end (delta: -444.5 MB). Peak memory consumption was 208.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:30:21,617 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:30:21,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.16 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 180.6 MB in the end (delta: -76.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:30:21,619 INFO L168 Benchmark]: Boogie Preprocessor took 45.41 ms. Allocated memory is still 204.5 MB. Free memory was 180.6 MB in the beginning and 178.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:30:21,619 INFO L168 Benchmark]: RCFGBuilder took 611.31 ms. Allocated memory is still 204.5 MB. Free memory was 178.6 MB in the beginning and 142.0 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2020-08-21 17:30:21,620 INFO L168 Benchmark]: TraceAbstraction took 39232.90 ms. Allocated memory was 204.5 MB in the beginning and 794.3 MB in the end (delta: 589.8 MB). Free memory was 141.3 MB in the beginning and 548.8 MB in the end (delta: -407.5 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:30:21,622 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 447.16 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 180.6 MB in the end (delta: -76.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.41 ms. Allocated memory is still 204.5 MB. Free memory was 180.6 MB in the beginning and 178.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 611.31 ms. Allocated memory is still 204.5 MB. Free memory was 178.6 MB in the beginning and 142.0 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39232.90 ms. Allocated memory was 204.5 MB in the beginning and 794.3 MB in the end (delta: 589.8 MB). Free memory was 141.3 MB in the beginning and 548.8 MB in the end (delta: -407.5 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int t2_pc = 0; [L18] int m_st ; [L19] int t1_st ; [L20] int t2_st ; [L21] int m_i ; [L22] int t1_i ; [L23] int t2_i ; [L24] int M_E = 2; [L25] int T1_E = 2; [L26] int T2_E = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L563] int __retres1 ; [L567] CALL init_model() [L477] m_i = 1 [L478] t1_i = 1 [L479] t2_i = 1 [L567] RET init_model() [L568] CALL start_simulation() [L504] int kernel_st ; [L505] int tmp ; [L506] int tmp___0 ; [L510] kernel_st = 0 [L511] FCALL update_channels() [L512] CALL init_threads() [L211] COND TRUE m_i == 1 [L212] m_st = 0 [L216] COND TRUE t1_i == 1 [L217] t1_st = 0 [L221] COND TRUE t2_i == 1 [L222] t2_st = 0 [L512] RET init_threads() [L513] CALL fire_delta_events() [L324] COND FALSE !(M_E == 0) [L329] COND FALSE !(T1_E == 0) [L334] COND FALSE !(T2_E == 0) [L339] COND FALSE !(E_1 == 0) [L344] COND FALSE !(E_2 == 0) [L513] RET fire_delta_events() [L514] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND FALSE !(t1_pc == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND FALSE !(t2_pc == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L514] RET activate_threads() [L515] CALL reset_delta_events() [L357] COND FALSE !(M_E == 1) [L362] COND FALSE !(T1_E == 1) [L367] COND FALSE !(T2_E == 1) [L372] COND FALSE !(E_1 == 1) [L377] COND FALSE !(E_2 == 1) [L515] RET reset_delta_events() [L518] COND TRUE 1 [L521] kernel_st = 1 [L522] CALL eval() [L257] int tmp ; [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND FALSE !(\read(tmp_ndt_1)) [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND TRUE t1_pc == 0 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND TRUE t2_pc == 0 [L124] COND TRUE 1 [L126] t2_pc = 1 [L127] t2_st = 2 [L305] RET transmit2() [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp_ndt_1) [L276] m_st = 1 [L277] CALL master() [L37] COND TRUE m_pc == 0 [L48] COND TRUE 1 [L51] E_1 = 1 [L52] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND TRUE E_1 == 1 [L167] __retres1 = 1 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND TRUE \read(tmp___0) [L404] t1_st = 0 [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND FALSE !(E_2 == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L425] RET activate_threads() [L52] RET immediate_notify() [L53] E_1 = 2 [L56] COND TRUE 1 [L58] m_pc = 1 [L59] m_st = 2 [L277] RET master() [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND FALSE !(t1_pc == 0) [L81] COND TRUE t1_pc == 1 [L97] E_2 = 1 [L98] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND TRUE m_pc == 1 [L147] COND FALSE !(M_E == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND FALSE !(E_1 == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND TRUE E_2 == 1 [L186] __retres1 = 1 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND TRUE \read(tmp___1) [L412] t2_st = 0 [L425] RET activate_threads() [L98] RET immediate_notify() [L99] E_2 = 2 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND FALSE !(t2_pc == 0) [L116] COND TRUE t2_pc == 1 [L132] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.1s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 31.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2605 SDtfs, 11531 SDslu, 735 SDs, 0 SdLazy, 15809 SolverSat, 5834 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6174occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 3916 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1939 NumberOfCodeBlocks, 1939 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1715 ConstructedInterpolants, 0 QuantifiedInterpolants, 487945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 237/237 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...