/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:34:38,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:34:38,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:34:38,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:34:38,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:34:38,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:34:38,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:34:38,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:34:38,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:34:38,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:34:38,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:34:38,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:34:38,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:34:38,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:34:38,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:34:38,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:34:38,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:34:38,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:34:38,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:34:38,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:34:38,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:34:38,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:34:38,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:34:38,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:34:38,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:34:38,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:34:39,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:34:39,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:34:39,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:34:39,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:34:39,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:34:39,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:34:39,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:34:39,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:34:39,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:34:39,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:34:39,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:34:39,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:34:39,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:34:39,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:34:39,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:34:39,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 01:34:39,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:34:39,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:34:39,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:34:39,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:34:39,054 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:34:39,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:34:39,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:34:39,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:34:39,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:34:39,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:34:39,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:34:39,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:34:39,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:34:39,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:34:39,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:34:39,057 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:34:39,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:34:39,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:34:39,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:34:39,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:34:39,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:34:39,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:34:39,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:34:39,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:34:39,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:34:39,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:34:39,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:34:39,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:34:39,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:34:39,060 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:34:39,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:34:39,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:34:39,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:34:39,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:34:39,402 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:34:39,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-22 01:34:39,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f062e64e/3ec97653aab64cfeac4009b2d2fe1471/FLAG51e734adb [2020-08-22 01:34:39,944 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:34:39,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-22 01:34:39,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f062e64e/3ec97653aab64cfeac4009b2d2fe1471/FLAG51e734adb [2020-08-22 01:34:40,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f062e64e/3ec97653aab64cfeac4009b2d2fe1471 [2020-08-22 01:34:40,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:34:40,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:34:40,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:34:40,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:34:40,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:34:40,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:34:40" (1/1) ... [2020-08-22 01:34:40,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d198e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40, skipping insertion in model container [2020-08-22 01:34:40,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:34:40" (1/1) ... [2020-08-22 01:34:40,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:34:40,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:34:40,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:34:40,712 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:34:40,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:34:40,844 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:34:40,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40 WrapperNode [2020-08-22 01:34:40,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:34:40,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:34:40,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:34:40,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:34:40,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40" (1/1) ... [2020-08-22 01:34:40,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40" (1/1) ... [2020-08-22 01:34:40,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40" (1/1) ... [2020-08-22 01:34:40,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40" (1/1) ... [2020-08-22 01:34:40,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40" (1/1) ... [2020-08-22 01:34:40,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40" (1/1) ... [2020-08-22 01:34:40,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40" (1/1) ... [2020-08-22 01:34:40,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:34:40,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:34:40,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:34:40,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:34:40,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:34:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:34:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:34:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 01:34:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 01:34:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 01:34:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 01:34:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 01:34:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 01:34:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 01:34:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 01:34:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 01:34:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 01:34:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 01:34:40,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 01:34:40,951 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 01:34:40,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 01:34:40,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 01:34:40,951 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 01:34:40,951 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 01:34:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 01:34:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:34:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:34:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 01:34:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 01:34:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 01:34:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 01:34:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:34:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 01:34:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 01:34:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 01:34:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 01:34:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 01:34:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 01:34:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 01:34:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 01:34:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 01:34:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 01:34:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 01:34:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 01:34:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 01:34:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 01:34:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:34:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:34:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:34:41,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:34:41,363 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 01:34:41,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:34:41 BoogieIcfgContainer [2020-08-22 01:34:41,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:34:41,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:34:41,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:34:41,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:34:41,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:34:40" (1/3) ... [2020-08-22 01:34:41,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7680c855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:34:41, skipping insertion in model container [2020-08-22 01:34:41,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:34:40" (2/3) ... [2020-08-22 01:34:41,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7680c855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:34:41, skipping insertion in model container [2020-08-22 01:34:41,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:34:41" (3/3) ... [2020-08-22 01:34:41,393 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-08-22 01:34:41,404 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:34:41,416 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:34:41,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:34:41,473 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:34:41,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:34:41,474 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:34:41,474 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:34:41,474 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:34:41,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:34:41,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:34:41,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:34:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-08-22 01:34:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 01:34:41,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:41,512 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] [2020-08-22 01:34:41,513 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:41,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:41,518 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-08-22 01:34:41,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:41,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76894165] [2020-08-22 01:34:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:41,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:41,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:42,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76894165] [2020-08-22 01:34:42,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:42,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:34:42,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649930976] [2020-08-22 01:34:42,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:34:42,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:42,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:34:42,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:34:42,113 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2020-08-22 01:34:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:44,175 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2020-08-22 01:34:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:34:44,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-22 01:34:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:44,195 INFO L225 Difference]: With dead ends: 501 [2020-08-22 01:34:44,196 INFO L226 Difference]: Without dead ends: 357 [2020-08-22 01:34:44,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:34:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-08-22 01:34:44,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2020-08-22 01:34:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 01:34:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-08-22 01:34:44,300 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2020-08-22 01:34:44,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:44,301 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-08-22 01:34:44,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:34:44,301 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-08-22 01:34:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 01:34:44,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:44,305 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] [2020-08-22 01:34:44,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:34:44,306 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:44,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:44,306 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2020-08-22 01:34:44,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:44,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118133935] [2020-08-22 01:34:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:44,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118133935] [2020-08-22 01:34:44,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:44,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:34:44,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361338473] [2020-08-22 01:34:44,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:34:44,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:44,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:34:44,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:34:44,582 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2020-08-22 01:34:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:45,786 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-08-22 01:34:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:34:45,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 01:34:45,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:45,794 INFO L225 Difference]: With dead ends: 573 [2020-08-22 01:34:45,796 INFO L226 Difference]: Without dead ends: 348 [2020-08-22 01:34:45,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:34:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-08-22 01:34:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2020-08-22 01:34:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 01:34:45,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2020-08-22 01:34:45,879 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2020-08-22 01:34:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:45,879 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2020-08-22 01:34:45,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:34:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2020-08-22 01:34:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 01:34:45,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:45,892 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] [2020-08-22 01:34:45,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:34:45,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:45,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:45,893 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2020-08-22 01:34:45,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:45,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857221345] [2020-08-22 01:34:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:46,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857221345] [2020-08-22 01:34:46,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:46,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:34:46,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048056483] [2020-08-22 01:34:46,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:34:46,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:46,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:34:46,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:34:46,150 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2020-08-22 01:34:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:47,622 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2020-08-22 01:34:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 01:34:47,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 01:34:47,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:47,627 INFO L225 Difference]: With dead ends: 696 [2020-08-22 01:34:47,628 INFO L226 Difference]: Without dead ends: 471 [2020-08-22 01:34:47,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-22 01:34:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-22 01:34:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2020-08-22 01:34:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-22 01:34:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-08-22 01:34:47,674 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2020-08-22 01:34:47,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:47,674 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-08-22 01:34:47,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:34:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-08-22 01:34:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 01:34:47,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:47,676 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] [2020-08-22 01:34:47,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:34:47,677 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:47,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:47,678 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2020-08-22 01:34:47,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:47,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240593956] [2020-08-22 01:34:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:47,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240593956] [2020-08-22 01:34:47,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:47,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:34:47,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955652342] [2020-08-22 01:34:47,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:34:47,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:47,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:34:47,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:34:47,877 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2020-08-22 01:34:49,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:49,196 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2020-08-22 01:34:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:34:49,199 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 01:34:49,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:49,204 INFO L225 Difference]: With dead ends: 718 [2020-08-22 01:34:49,205 INFO L226 Difference]: Without dead ends: 442 [2020-08-22 01:34:49,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:34:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-22 01:34:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2020-08-22 01:34:49,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-22 01:34:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2020-08-22 01:34:49,257 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2020-08-22 01:34:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:49,258 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2020-08-22 01:34:49,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:34:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2020-08-22 01:34:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 01:34:49,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:49,260 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] [2020-08-22 01:34:49,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:34:49,261 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:49,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:49,263 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2020-08-22 01:34:49,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:49,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191598650] [2020-08-22 01:34:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:49,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191598650] [2020-08-22 01:34:49,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:49,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:34:49,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088877884] [2020-08-22 01:34:49,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:34:49,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:49,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:34:49,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:34:49,476 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2020-08-22 01:34:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:50,917 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2020-08-22 01:34:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:34:50,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 01:34:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:50,922 INFO L225 Difference]: With dead ends: 748 [2020-08-22 01:34:50,922 INFO L226 Difference]: Without dead ends: 452 [2020-08-22 01:34:50,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:34:50,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-22 01:34:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2020-08-22 01:34:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-22 01:34:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2020-08-22 01:34:50,964 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2020-08-22 01:34:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:50,965 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2020-08-22 01:34:50,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:34:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2020-08-22 01:34:50,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 01:34:50,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:50,968 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] [2020-08-22 01:34:50,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:34:50,969 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2020-08-22 01:34:50,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:50,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140943235] [2020-08-22 01:34:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:51,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140943235] [2020-08-22 01:34:51,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:51,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:34:51,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802909633] [2020-08-22 01:34:51,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:34:51,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:51,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:34:51,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:34:51,139 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2020-08-22 01:34:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:52,519 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2020-08-22 01:34:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 01:34:52,520 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 01:34:52,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:52,528 INFO L225 Difference]: With dead ends: 894 [2020-08-22 01:34:52,528 INFO L226 Difference]: Without dead ends: 587 [2020-08-22 01:34:52,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-08-22 01:34:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-08-22 01:34:52,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2020-08-22 01:34:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-22 01:34:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2020-08-22 01:34:52,593 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2020-08-22 01:34:52,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:52,593 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2020-08-22 01:34:52,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:34:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2020-08-22 01:34:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 01:34:52,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:52,595 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] [2020-08-22 01:34:52,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:34:52,595 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:52,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:52,597 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2020-08-22 01:34:52,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:52,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334961330] [2020-08-22 01:34:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:34:52,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334961330] [2020-08-22 01:34:52,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:52,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:34:52,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548669732] [2020-08-22 01:34:52,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:34:52,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:52,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:34:52,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:34:52,722 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2020-08-22 01:34:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:53,873 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2020-08-22 01:34:53,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:34:53,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-22 01:34:53,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:53,880 INFO L225 Difference]: With dead ends: 1180 [2020-08-22 01:34:53,880 INFO L226 Difference]: Without dead ends: 838 [2020-08-22 01:34:53,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:34:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-08-22 01:34:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2020-08-22 01:34:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-22 01:34:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2020-08-22 01:34:53,970 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2020-08-22 01:34:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:53,971 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2020-08-22 01:34:53,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:34:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2020-08-22 01:34:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 01:34:53,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:53,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:34:53,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:34:53,976 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:53,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:53,977 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2020-08-22 01:34:53,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:53,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015927409] [2020-08-22 01:34:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 01:34:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:34:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:34:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 01:34:54,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015927409] [2020-08-22 01:34:54,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:34:54,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 01:34:54,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420536025] [2020-08-22 01:34:54,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:34:54,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:54,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:34:54,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:34:54,246 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 9 states. [2020-08-22 01:34:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:55,967 INFO L93 Difference]: Finished difference Result 2077 states and 2719 transitions. [2020-08-22 01:34:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:34:55,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-22 01:34:55,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:55,976 INFO L225 Difference]: With dead ends: 2077 [2020-08-22 01:34:55,977 INFO L226 Difference]: Without dead ends: 1361 [2020-08-22 01:34:55,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-08-22 01:34:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-22 01:34:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1278. [2020-08-22 01:34:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-08-22 01:34:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1535 transitions. [2020-08-22 01:34:56,090 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1535 transitions. Word has length 121 [2020-08-22 01:34:56,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:56,092 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1535 transitions. [2020-08-22 01:34:56,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:34:56,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1535 transitions. [2020-08-22 01:34:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 01:34:56,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:56,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:34:56,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:34:56,095 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:56,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:56,095 INFO L82 PathProgramCache]: Analyzing trace with hash 772889349, now seen corresponding path program 1 times [2020-08-22 01:34:56,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:56,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735329197] [2020-08-22 01:34:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 01:34:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:34:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:34:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-22 01:34:56,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735329197] [2020-08-22 01:34:56,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:34:56,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:34:56,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189639751] [2020-08-22 01:34:56,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:34:56,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:56,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:34:56,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:34:56,346 INFO L87 Difference]: Start difference. First operand 1278 states and 1535 transitions. Second operand 9 states. [2020-08-22 01:34:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:58,071 INFO L93 Difference]: Finished difference Result 3315 states and 4133 transitions. [2020-08-22 01:34:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 01:34:58,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-22 01:34:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:58,081 INFO L225 Difference]: With dead ends: 3315 [2020-08-22 01:34:58,081 INFO L226 Difference]: Without dead ends: 1560 [2020-08-22 01:34:58,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-08-22 01:34:58,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-08-22 01:34:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1494. [2020-08-22 01:34:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-08-22 01:34:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1762 transitions. [2020-08-22 01:34:58,216 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1762 transitions. Word has length 121 [2020-08-22 01:34:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:58,217 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1762 transitions. [2020-08-22 01:34:58,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:34:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1762 transitions. [2020-08-22 01:34:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 01:34:58,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:58,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:34:58,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:34:58,224 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:34:58,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:34:58,225 INFO L82 PathProgramCache]: Analyzing trace with hash 846884099, now seen corresponding path program 1 times [2020-08-22 01:34:58,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:34:58,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005686597] [2020-08-22 01:34:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:34:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:34:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:34:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:34:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:34:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:34:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:34:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:34:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 01:34:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 01:34:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 01:34:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:34:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 01:34:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:34:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:34:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:34:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:34:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 01:34:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:34:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-08-22 01:34:58,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005686597] [2020-08-22 01:34:58,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:34:58,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 01:34:58,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763448437] [2020-08-22 01:34:58,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:34:58,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:34:58,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:34:58,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:34:58,432 INFO L87 Difference]: Start difference. First operand 1494 states and 1762 transitions. Second operand 9 states. [2020-08-22 01:34:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:34:59,860 INFO L93 Difference]: Finished difference Result 3041 states and 3692 transitions. [2020-08-22 01:34:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 01:34:59,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-08-22 01:34:59,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:34:59,871 INFO L225 Difference]: With dead ends: 3041 [2020-08-22 01:34:59,871 INFO L226 Difference]: Without dead ends: 1568 [2020-08-22 01:34:59,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:34:59,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-08-22 01:34:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1488. [2020-08-22 01:34:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-08-22 01:34:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1728 transitions. [2020-08-22 01:34:59,994 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1728 transitions. Word has length 175 [2020-08-22 01:34:59,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:34:59,995 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1728 transitions. [2020-08-22 01:34:59,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:34:59,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1728 transitions. [2020-08-22 01:34:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 01:34:59,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:34:59,999 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:34:59,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:34:59,999 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:35:00,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:35:00,000 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2020-08-22 01:35:00,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:35:00,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805923183] [2020-08-22 01:35:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:35:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:35:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:35:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:35:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:35:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:35:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:35:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:35:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:35:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:35:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:35:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 01:35:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:35:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:35:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:35:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:35:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:35:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 01:35:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 01:35:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:35:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:35:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:35:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:35:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 01:35:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-22 01:35:00,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805923183] [2020-08-22 01:35:00,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:35:00,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:35:00,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145983540] [2020-08-22 01:35:00,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:35:00,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:35:00,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:35:00,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:35:00,377 INFO L87 Difference]: Start difference. First operand 1488 states and 1728 transitions. Second operand 10 states. [2020-08-22 01:35:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:35:02,308 INFO L93 Difference]: Finished difference Result 3478 states and 4131 transitions. [2020-08-22 01:35:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 01:35:02,308 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-08-22 01:35:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:35:02,316 INFO L225 Difference]: With dead ends: 3478 [2020-08-22 01:35:02,316 INFO L226 Difference]: Without dead ends: 1006 [2020-08-22 01:35:02,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-08-22 01:35:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-08-22 01:35:02,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 970. [2020-08-22 01:35:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-22 01:35:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1098 transitions. [2020-08-22 01:35:02,411 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1098 transitions. Word has length 176 [2020-08-22 01:35:02,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:35:02,411 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1098 transitions. [2020-08-22 01:35:02,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:35:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1098 transitions. [2020-08-22 01:35:02,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 01:35:02,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:35:02,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:35:02,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:35:02,416 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:35:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:35:02,416 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2020-08-22 01:35:02,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:35:02,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834640398] [2020-08-22 01:35:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:35:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:35:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:35:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:35:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:35:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:35:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:35:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:35:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:35:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:35:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:35:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 01:35:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 01:35:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 01:35:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:35:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:35:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:35:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:35:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 01:35:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:35:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:35:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:35:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:35:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 01:35:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:35:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-08-22 01:35:02,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834640398] [2020-08-22 01:35:02,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:35:02,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 01:35:02,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056167328] [2020-08-22 01:35:02,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:35:02,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:35:02,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:35:02,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:35:02,861 INFO L87 Difference]: Start difference. First operand 970 states and 1098 transitions. Second operand 12 states. [2020-08-22 01:35:05,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:35:05,066 INFO L93 Difference]: Finished difference Result 1204 states and 1390 transitions. [2020-08-22 01:35:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 01:35:05,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-08-22 01:35:05,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:35:05,068 INFO L225 Difference]: With dead ends: 1204 [2020-08-22 01:35:05,068 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 01:35:05,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-08-22 01:35:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 01:35:05,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 01:35:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 01:35:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 01:35:05,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-22 01:35:05,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:35:05,073 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 01:35:05,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:35:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 01:35:05,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 01:35:05,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 01:35:05,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 01:35:05,791 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 01:35:06,063 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 01:35:06,286 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 01:35:06,473 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 01:35:06,644 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 01:35:16,357 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-08-22 01:35:17,642 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 137 DAG size of output: 57 [2020-08-22 01:35:18,051 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-22 01:35:18,706 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 01:35:19,396 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 01:35:19,554 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-08-22 01:35:20,199 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 01:35:20,856 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 01:35:20,984 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-22 01:35:21,661 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 01:35:22,593 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 82 [2020-08-22 01:35:23,455 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2020-08-22 01:35:24,892 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2020-08-22 01:35:25,324 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-22 01:35:26,321 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-08-22 01:35:27,336 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-22 01:35:28,419 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 166 DAG size of output: 83 [2020-08-22 01:35:29,100 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 01:35:29,362 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-08-22 01:35:31,596 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-22 01:35:32,431 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 55 [2020-08-22 01:35:32,754 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-22 01:35:35,004 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-22 01:35:35,343 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-08-22 01:35:35,973 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 01:35:38,226 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-22 01:35:38,331 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-22 01:35:38,443 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-22 01:35:38,737 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49