/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 04:00:15,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:00:15,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:00:15,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:00:15,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:00:15,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:00:15,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:00:15,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:00:15,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:00:15,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:00:15,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:00:15,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:00:15,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:00:15,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:00:15,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:00:15,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:00:15,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:00:15,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:00:15,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:00:15,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:00:15,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:00:15,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:00:15,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:00:15,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:00:15,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:00:15,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:00:15,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:00:15,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:00:15,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:00:15,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:00:15,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:00:15,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:00:15,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:00:15,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:00:15,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:00:15,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:00:15,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:00:15,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:00:15,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:00:15,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:00:15,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:00:15,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:00:15,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:00:15,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:00:15,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:00:15,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:00:15,482 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:00:15,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:00:15,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:00:15,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:00:15,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:00:15,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:00:15,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:00:15,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:00:15,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:00:15,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:00:15,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:00:15,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:00:15,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:00:15,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:00:15,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:00:15,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:00:15,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:00:15,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:00:15,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:00:15,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:00:15,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:00:15,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:00:15,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:00:15,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:00:15,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:00:15,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 04:00:15,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:00:15,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:00:15,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:00:15,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:00:15,823 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:00:15,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-22 04:00:15,883 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4684ffe9/447e2ab5750f4167ace3253e85125af2/FLAG7dbc1cf77 [2020-08-22 04:00:16,316 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:00:16,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-22 04:00:16,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4684ffe9/447e2ab5750f4167ace3253e85125af2/FLAG7dbc1cf77 [2020-08-22 04:00:16,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4684ffe9/447e2ab5750f4167ace3253e85125af2 [2020-08-22 04:00:16,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:00:16,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:00:16,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:00:16,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:00:16,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:00:16,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:00:16" (1/1) ... [2020-08-22 04:00:16,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3326bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:16, skipping insertion in model container [2020-08-22 04:00:16,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:00:16" (1/1) ... [2020-08-22 04:00:16,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:00:16,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:00:17,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:00:17,029 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:00:17,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:00:17,163 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:00:17,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17 WrapperNode [2020-08-22 04:00:17,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:00:17,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:00:17,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:00:17,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:00:17,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17" (1/1) ... [2020-08-22 04:00:17,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17" (1/1) ... [2020-08-22 04:00:17,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17" (1/1) ... [2020-08-22 04:00:17,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17" (1/1) ... [2020-08-22 04:00:17,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17" (1/1) ... [2020-08-22 04:00:17,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17" (1/1) ... [2020-08-22 04:00:17,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17" (1/1) ... [2020-08-22 04:00:17,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:00:17,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:00:17,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:00:17,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:00:17,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:00:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:00:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:00:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 04:00:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 04:00:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 04:00:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 04:00:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 04:00:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 04:00:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 04:00:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 04:00:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 04:00:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 04:00:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 04:00:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 04:00:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 04:00:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 04:00:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 04:00:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 04:00:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 04:00:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 04:00:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:00:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:00:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 04:00:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 04:00:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 04:00:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 04:00:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:00:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 04:00:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 04:00:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 04:00:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 04:00:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 04:00:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 04:00:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 04:00:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 04:00:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 04:00:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 04:00:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 04:00:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 04:00:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 04:00:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 04:00:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:00:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:00:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:00:17,783 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:00:17,784 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 04:00:17,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:00:17 BoogieIcfgContainer [2020-08-22 04:00:17,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:00:17,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:00:17,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:00:17,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:00:17,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:00:16" (1/3) ... [2020-08-22 04:00:17,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27419171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:00:17, skipping insertion in model container [2020-08-22 04:00:17,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:17" (2/3) ... [2020-08-22 04:00:17,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27419171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:00:17, skipping insertion in model container [2020-08-22 04:00:17,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:00:17" (3/3) ... [2020-08-22 04:00:17,798 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-08-22 04:00:17,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:00:17,822 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:00:17,836 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:00:17,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:00:17,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:00:17,860 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:00:17,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:00:17,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:00:17,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:00:17,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:00:17,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:00:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-08-22 04:00:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 04:00:17,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:17,896 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 04:00:17,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:17,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:17,903 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-08-22 04:00:17,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:17,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419393103] [2020-08-22 04:00:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:18,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419393103] [2020-08-22 04:00:18,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:18,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:00:18,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871714354] [2020-08-22 04:00:18,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:00:18,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:18,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:00:18,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:00:18,578 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2020-08-22 04:00:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:20,658 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2020-08-22 04:00:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:00:20,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-22 04:00:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:20,678 INFO L225 Difference]: With dead ends: 501 [2020-08-22 04:00:20,679 INFO L226 Difference]: Without dead ends: 357 [2020-08-22 04:00:20,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:00:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-08-22 04:00:20,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2020-08-22 04:00:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 04:00:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-08-22 04:00:20,785 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2020-08-22 04:00:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:20,786 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-08-22 04:00:20,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:00:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-08-22 04:00:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 04:00:20,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:20,791 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 04:00:20,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:00:20,791 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:20,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2020-08-22 04:00:20,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:20,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695069253] [2020-08-22 04:00:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:20,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:20,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:20,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:20,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:20,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:20,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:20,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:21,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695069253] [2020-08-22 04:00:21,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:21,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:21,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121879542] [2020-08-22 04:00:21,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:21,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:21,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:21,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:21,017 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2020-08-22 04:00:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:22,199 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-08-22 04:00:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:00:22,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 04:00:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:22,211 INFO L225 Difference]: With dead ends: 573 [2020-08-22 04:00:22,211 INFO L226 Difference]: Without dead ends: 348 [2020-08-22 04:00:22,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:00:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-08-22 04:00:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2020-08-22 04:00:22,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 04:00:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2020-08-22 04:00:22,274 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2020-08-22 04:00:22,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:22,274 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2020-08-22 04:00:22,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:22,275 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2020-08-22 04:00:22,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 04:00:22,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:22,277 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 04:00:22,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:00:22,277 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:22,278 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2020-08-22 04:00:22,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:22,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446053085] [2020-08-22 04:00:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:22,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446053085] [2020-08-22 04:00:22,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:22,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:22,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145578056] [2020-08-22 04:00:22,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:22,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:22,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:22,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:22,434 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2020-08-22 04:00:23,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:23,976 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2020-08-22 04:00:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 04:00:23,981 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 04:00:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:23,986 INFO L225 Difference]: With dead ends: 696 [2020-08-22 04:00:23,987 INFO L226 Difference]: Without dead ends: 471 [2020-08-22 04:00:23,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-22 04:00:23,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-22 04:00:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2020-08-22 04:00:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-22 04:00:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-08-22 04:00:24,035 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2020-08-22 04:00:24,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:24,036 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-08-22 04:00:24,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-08-22 04:00:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 04:00:24,037 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:24,038 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 04:00:24,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:00:24,038 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:24,039 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2020-08-22 04:00:24,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:24,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522713171] [2020-08-22 04:00:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:24,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522713171] [2020-08-22 04:00:24,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:24,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:24,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582888067] [2020-08-22 04:00:24,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:24,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:24,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:24,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:24,245 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2020-08-22 04:00:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:25,541 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2020-08-22 04:00:25,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:00:25,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 04:00:25,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:25,547 INFO L225 Difference]: With dead ends: 718 [2020-08-22 04:00:25,547 INFO L226 Difference]: Without dead ends: 442 [2020-08-22 04:00:25,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:00:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-22 04:00:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2020-08-22 04:00:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-22 04:00:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2020-08-22 04:00:25,604 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2020-08-22 04:00:25,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:25,604 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2020-08-22 04:00:25,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2020-08-22 04:00:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 04:00:25,611 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:25,612 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 04:00:25,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:00:25,612 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:25,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:25,613 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2020-08-22 04:00:25,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:25,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009834136] [2020-08-22 04:00:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:25,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009834136] [2020-08-22 04:00:25,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:25,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:25,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242731672] [2020-08-22 04:00:25,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:25,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:25,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:25,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:25,800 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2020-08-22 04:00:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:27,059 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2020-08-22 04:00:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:00:27,059 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 04:00:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:27,064 INFO L225 Difference]: With dead ends: 748 [2020-08-22 04:00:27,064 INFO L226 Difference]: Without dead ends: 452 [2020-08-22 04:00:27,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:00:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-22 04:00:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2020-08-22 04:00:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-22 04:00:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2020-08-22 04:00:27,101 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2020-08-22 04:00:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:27,102 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2020-08-22 04:00:27,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2020-08-22 04:00:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 04:00:27,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:27,105 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 04:00:27,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:00:27,105 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:27,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2020-08-22 04:00:27,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:27,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145638040] [2020-08-22 04:00:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:27,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145638040] [2020-08-22 04:00:27,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:27,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:00:27,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861659598] [2020-08-22 04:00:27,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:27,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:27,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:27,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:27,310 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2020-08-22 04:00:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:28,813 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2020-08-22 04:00:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:00:28,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 04:00:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:28,819 INFO L225 Difference]: With dead ends: 894 [2020-08-22 04:00:28,819 INFO L226 Difference]: Without dead ends: 587 [2020-08-22 04:00:28,821 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 04:00:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-08-22 04:00:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2020-08-22 04:00:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-22 04:00:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2020-08-22 04:00:28,862 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2020-08-22 04:00:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:28,863 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2020-08-22 04:00:28,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2020-08-22 04:00:28,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 04:00:28,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:28,864 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 04:00:28,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:00:28,865 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:28,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:28,865 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2020-08-22 04:00:28,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:28,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598947946] [2020-08-22 04:00:28,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:28,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:29,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598947946] [2020-08-22 04:00:29,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:29,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:00:29,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38992229] [2020-08-22 04:00:29,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:00:29,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:00:29,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:00:29,007 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2020-08-22 04:00:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:30,270 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2020-08-22 04:00:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:00:30,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-22 04:00:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:30,276 INFO L225 Difference]: With dead ends: 1180 [2020-08-22 04:00:30,277 INFO L226 Difference]: Without dead ends: 838 [2020-08-22 04:00:30,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:00:30,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-08-22 04:00:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2020-08-22 04:00:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-22 04:00:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2020-08-22 04:00:30,382 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2020-08-22 04:00:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:30,383 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2020-08-22 04:00:30,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:00:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2020-08-22 04:00:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 04:00:30,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:30,388 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 04:00:30,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:00:30,388 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:30,389 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2020-08-22 04:00:30,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:30,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564299161] [2020-08-22 04:00:30,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 04:00:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:00:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:30,658 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 04:00:30,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564299161] [2020-08-22 04:00:30,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:00:30,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 04:00:30,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100438583] [2020-08-22 04:00:30,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:00:30,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:30,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:00:30,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:00:30,661 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 9 states. [2020-08-22 04:00:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:32,460 INFO L93 Difference]: Finished difference Result 2077 states and 2719 transitions. [2020-08-22 04:00:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:00:32,460 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-22 04:00:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:32,470 INFO L225 Difference]: With dead ends: 2077 [2020-08-22 04:00:32,470 INFO L226 Difference]: Without dead ends: 1361 [2020-08-22 04:00:32,474 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 04:00:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-22 04:00:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1278. [2020-08-22 04:00:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-08-22 04:00:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1535 transitions. [2020-08-22 04:00:32,576 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1535 transitions. Word has length 121 [2020-08-22 04:00:32,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:32,577 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1535 transitions. [2020-08-22 04:00:32,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:00:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1535 transitions. [2020-08-22 04:00:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 04:00:32,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:32,579 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 04:00:32,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:00:32,580 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:32,580 INFO L82 PathProgramCache]: Analyzing trace with hash 772889349, now seen corresponding path program 1 times [2020-08-22 04:00:32,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:32,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144120496] [2020-08-22 04:00:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 04:00:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:00:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:32,776 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 04:00:32,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144120496] [2020-08-22 04:00:32,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:32,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:00:32,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766210264] [2020-08-22 04:00:32,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:00:32,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:32,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:00:32,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:00:32,785 INFO L87 Difference]: Start difference. First operand 1278 states and 1535 transitions. Second operand 9 states. [2020-08-22 04:00:34,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:34,543 INFO L93 Difference]: Finished difference Result 3315 states and 4133 transitions. [2020-08-22 04:00:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 04:00:34,544 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-22 04:00:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:34,558 INFO L225 Difference]: With dead ends: 3315 [2020-08-22 04:00:34,558 INFO L226 Difference]: Without dead ends: 1560 [2020-08-22 04:00:34,565 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 04:00:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-08-22 04:00:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1494. [2020-08-22 04:00:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-08-22 04:00:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1762 transitions. [2020-08-22 04:00:34,704 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1762 transitions. Word has length 121 [2020-08-22 04:00:34,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:34,706 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1762 transitions. [2020-08-22 04:00:34,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:00:34,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1762 transitions. [2020-08-22 04:00:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 04:00:34,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:34,711 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 04:00:34,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:00:34,712 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:34,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:34,712 INFO L82 PathProgramCache]: Analyzing trace with hash 846884099, now seen corresponding path program 1 times [2020-08-22 04:00:34,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:34,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428699831] [2020-08-22 04:00:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 04:00:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:00:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:00:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 04:00:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 04:00:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:34,972 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 04:00:34,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428699831] [2020-08-22 04:00:34,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:00:34,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 04:00:34,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462188384] [2020-08-22 04:00:34,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:00:34,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:34,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:00:34,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:00:34,977 INFO L87 Difference]: Start difference. First operand 1494 states and 1762 transitions. Second operand 9 states. [2020-08-22 04:00:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:36,368 INFO L93 Difference]: Finished difference Result 3041 states and 3692 transitions. [2020-08-22 04:00:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 04:00:36,368 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-08-22 04:00:36,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:36,377 INFO L225 Difference]: With dead ends: 3041 [2020-08-22 04:00:36,378 INFO L226 Difference]: Without dead ends: 1568 [2020-08-22 04:00:36,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:00:36,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-08-22 04:00:36,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1488. [2020-08-22 04:00:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-08-22 04:00:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1728 transitions. [2020-08-22 04:00:36,507 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1728 transitions. Word has length 175 [2020-08-22 04:00:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:36,507 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1728 transitions. [2020-08-22 04:00:36,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:00:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1728 transitions. [2020-08-22 04:00:36,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 04:00:36,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:36,513 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 04:00:36,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:00:36,513 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:36,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:36,514 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2020-08-22 04:00:36,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:36,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916468243] [2020-08-22 04:00:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 04:00:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:00:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 04:00:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 04:00:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 04:00:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:36,779 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 04:00:36,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916468243] [2020-08-22 04:00:36,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:00:36,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:00:36,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203071013] [2020-08-22 04:00:36,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:00:36,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:36,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:00:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:00:36,782 INFO L87 Difference]: Start difference. First operand 1488 states and 1728 transitions. Second operand 10 states. [2020-08-22 04:00:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:38,451 INFO L93 Difference]: Finished difference Result 3478 states and 4131 transitions. [2020-08-22 04:00:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 04:00:38,451 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-08-22 04:00:38,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:38,458 INFO L225 Difference]: With dead ends: 3478 [2020-08-22 04:00:38,458 INFO L226 Difference]: Without dead ends: 1006 [2020-08-22 04:00:38,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-08-22 04:00:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-08-22 04:00:38,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 970. [2020-08-22 04:00:38,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-22 04:00:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1098 transitions. [2020-08-22 04:00:38,572 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1098 transitions. Word has length 176 [2020-08-22 04:00:38,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:38,572 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1098 transitions. [2020-08-22 04:00:38,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:00:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1098 transitions. [2020-08-22 04:00:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 04:00:38,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:38,576 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 04:00:38,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:00:38,577 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:38,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:38,577 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2020-08-22 04:00:38,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:38,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464255457] [2020-08-22 04:00:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:00:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:00:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:00:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:00:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:00:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:00:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:00:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:00:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:00:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 04:00:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 04:00:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 04:00:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:00:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:00:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 04:00:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:38,929 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 04:00:38,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464255457] [2020-08-22 04:00:38,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:00:38,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:00:38,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830553683] [2020-08-22 04:00:38,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:00:38,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:38,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:00:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:00:38,932 INFO L87 Difference]: Start difference. First operand 970 states and 1098 transitions. Second operand 12 states. [2020-08-22 04:00:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:41,006 INFO L93 Difference]: Finished difference Result 1204 states and 1390 transitions. [2020-08-22 04:00:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:00:41,006 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-08-22 04:00:41,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:41,007 INFO L225 Difference]: With dead ends: 1204 [2020-08-22 04:00:41,007 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 04:00:41,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-08-22 04:00:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 04:00:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 04:00:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 04:00:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 04:00:41,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-22 04:00:41,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:41,017 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 04:00:41,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:00:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 04:00:41,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 04:00:41,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:00:41,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 04:00:41,754 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 04:00:42,032 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 04:00:42,300 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 04:00:42,490 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 04:00:42,662 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 04:00:43,744 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-08-22 04:00:52,458 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-08-22 04:00:53,762 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 137 DAG size of output: 57 [2020-08-22 04:00:54,177 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-22 04:00:54,825 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 04:00:55,511 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 04:00:55,671 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-08-22 04:00:56,339 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 04:00:56,986 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 04:00:57,117 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-22 04:00:57,788 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 04:00:58,712 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 82 [2020-08-22 04:00:58,879 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-22 04:00:59,595 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2020-08-22 04:01:01,003 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2020-08-22 04:01:01,410 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-22 04:01:02,492 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-08-22 04:01:03,544 WARN L193 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-22 04:01:04,596 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 166 DAG size of output: 83 [2020-08-22 04:01:05,210 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 04:01:05,480 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-08-22 04:01:07,694 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-22 04:01:08,481 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 55 [2020-08-22 04:01:08,790 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-22 04:01:11,002 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-22 04:01:11,351 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-08-22 04:01:12,019 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 04:01:14,205 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-22 04:01:14,307 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-22 04:01:14,417 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-22 04:01:14,694 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-08-22 04:01:15,612 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-22 04:01:16,137 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-08-22 04:01:16,623 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2020-08-22 04:01:17,033 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60