/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=0.5 --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 06:26:04,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:26:04,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:26:04,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:26:04,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:26:04,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:26:04,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:26:04,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:26:04,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:26:04,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:26:04,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:26:04,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:26:04,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:26:04,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:26:04,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:26:04,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:26:04,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:26:04,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:26:04,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:26:04,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:26:04,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:26:04,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:26:04,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:26:04,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:26:04,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:26:04,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:26:04,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:26:04,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:26:04,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:26:04,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:26:04,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:26:04,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:26:04,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:26:04,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:26:04,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:26:04,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:26:04,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:26:04,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:26:04,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:26:04,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:26:04,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:26:04,274 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 06:26:04,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:26:04,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:26:04,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:26:04,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:26:04,315 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:26:04,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:26:04,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:26:04,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:26:04,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:26:04,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:26:04,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:26:04,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:26:04,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:26:04,318 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:26:04,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:26:04,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:26:04,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:26:04,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:26:04,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:26:04,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:26:04,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:26:04,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:26:04,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:26:04,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:26:04,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:26:04,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:26:04,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:26:04,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:26:04,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:26:04,321 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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-08-22 06:26:04,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:26:04,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:26:04,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:26:04,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:26:04,688 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:26:04,688 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-22 06:26:04,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0de0694a/42de395aeac04f3da1042ea5f478f2c0/FLAGd26eedbe7 [2020-08-22 06:26:05,202 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:26:05,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-22 06:26:05,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0de0694a/42de395aeac04f3da1042ea5f478f2c0/FLAGd26eedbe7 [2020-08-22 06:26:05,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0de0694a/42de395aeac04f3da1042ea5f478f2c0 [2020-08-22 06:26:05,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:26:05,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:26:05,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:26:05,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:26:05,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:26:05,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:26:05" (1/1) ... [2020-08-22 06:26:05,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd12457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:05, skipping insertion in model container [2020-08-22 06:26:05,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:26:05" (1/1) ... [2020-08-22 06:26:05,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:26:05,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:26:05,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:26:05,970 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:26:06,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:26:06,106 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:26:06,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06 WrapperNode [2020-08-22 06:26:06,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:26:06,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:26:06,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:26:06,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:26:06,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06" (1/1) ... [2020-08-22 06:26:06,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06" (1/1) ... [2020-08-22 06:26:06,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06" (1/1) ... [2020-08-22 06:26:06,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06" (1/1) ... [2020-08-22 06:26:06,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06" (1/1) ... [2020-08-22 06:26:06,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06" (1/1) ... [2020-08-22 06:26:06,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06" (1/1) ... [2020-08-22 06:26:06,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:26:06,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:26:06,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:26:06,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:26:06,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06" (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 06:26:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:26:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:26:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 06:26:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 06:26:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 06:26:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 06:26:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 06:26:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 06:26:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 06:26:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 06:26:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 06:26:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 06:26:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 06:26:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 06:26:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 06:26:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 06:26:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 06:26:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 06:26:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 06:26:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 06:26:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:26:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:26:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 06:26:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 06:26:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 06:26:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 06:26:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:26:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 06:26:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 06:26:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 06:26:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 06:26:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 06:26:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 06:26:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 06:26:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 06:26:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 06:26:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 06:26:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 06:26:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 06:26:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 06:26:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 06:26:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:26:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:26:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:26:06,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:26:06,722 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 06:26:06,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:26:06 BoogieIcfgContainer [2020-08-22 06:26:06,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:26:06,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:26:06,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:26:06,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:26:06,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:26:05" (1/3) ... [2020-08-22 06:26:06,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea68304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:26:06, skipping insertion in model container [2020-08-22 06:26:06,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:06" (2/3) ... [2020-08-22 06:26:06,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea68304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:26:06, skipping insertion in model container [2020-08-22 06:26:06,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:26:06" (3/3) ... [2020-08-22 06:26:06,742 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-08-22 06:26:06,753 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:26:06,764 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:26:06,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:26:06,813 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:26:06,813 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:26:06,813 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:26:06,813 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:26:06,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:26:06,814 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:26:06,814 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:26:06,814 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:26:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-08-22 06:26:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 06:26:06,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:06,852 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 06:26:06,852 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:06,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:06,859 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-08-22 06:26:06,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:06,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680272132] [2020-08-22 06:26:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:07,457 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 06:26:07,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680272132] [2020-08-22 06:26:07,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:07,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 06:26:07,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346576396] [2020-08-22 06:26:07,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:26:07,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:07,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:26:07,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:26:07,485 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2020-08-22 06:26:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:09,615 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2020-08-22 06:26:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 06:26:09,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-22 06:26:09,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:09,636 INFO L225 Difference]: With dead ends: 501 [2020-08-22 06:26:09,636 INFO L226 Difference]: Without dead ends: 357 [2020-08-22 06:26:09,642 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 06:26:09,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-08-22 06:26:09,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2020-08-22 06:26:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 06:26:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-08-22 06:26:09,743 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2020-08-22 06:26:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:09,744 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-08-22 06:26:09,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:26:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-08-22 06:26:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 06:26:09,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:09,748 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 06:26:09,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:26:09,749 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2020-08-22 06:26:09,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:09,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740609562] [2020-08-22 06:26:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:09,991 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 06:26:09,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740609562] [2020-08-22 06:26:09,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:09,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 06:26:09,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982223582] [2020-08-22 06:26:09,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:26:09,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:09,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:26:09,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:26:09,995 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2020-08-22 06:26:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:11,175 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-08-22 06:26:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 06:26:11,176 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 06:26:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:11,189 INFO L225 Difference]: With dead ends: 573 [2020-08-22 06:26:11,191 INFO L226 Difference]: Without dead ends: 348 [2020-08-22 06:26:11,197 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 06:26:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-08-22 06:26:11,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2020-08-22 06:26:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 06:26:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2020-08-22 06:26:11,287 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2020-08-22 06:26:11,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:11,287 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2020-08-22 06:26:11,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:26:11,288 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2020-08-22 06:26:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 06:26:11,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:11,300 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 06:26:11,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:26:11,301 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:11,301 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2020-08-22 06:26:11,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:11,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049766802] [2020-08-22 06:26:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:11,559 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 06:26:11,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049766802] [2020-08-22 06:26:11,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:11,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 06:26:11,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747350485] [2020-08-22 06:26:11,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:26:11,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:11,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:26:11,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:26:11,561 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2020-08-22 06:26:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:13,096 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2020-08-22 06:26:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 06:26:13,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 06:26:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:13,101 INFO L225 Difference]: With dead ends: 696 [2020-08-22 06:26:13,102 INFO L226 Difference]: Without dead ends: 471 [2020-08-22 06:26:13,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-08-22 06:26:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-22 06:26:13,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2020-08-22 06:26:13,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-22 06:26:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-08-22 06:26:13,148 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2020-08-22 06:26:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:13,149 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-08-22 06:26:13,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:26:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-08-22 06:26:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 06:26:13,150 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:13,151 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 06:26:13,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:26:13,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:13,152 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2020-08-22 06:26:13,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:13,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765570116] [2020-08-22 06:26:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:13,326 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 06:26:13,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765570116] [2020-08-22 06:26:13,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:13,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 06:26:13,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448359459] [2020-08-22 06:26:13,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:26:13,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:13,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:26:13,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:26:13,328 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2020-08-22 06:26:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:14,592 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2020-08-22 06:26:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 06:26:14,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 06:26:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:14,601 INFO L225 Difference]: With dead ends: 718 [2020-08-22 06:26:14,601 INFO L226 Difference]: Without dead ends: 442 [2020-08-22 06:26:14,604 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 06:26:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-22 06:26:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2020-08-22 06:26:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-22 06:26:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2020-08-22 06:26:14,666 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2020-08-22 06:26:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:14,669 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2020-08-22 06:26:14,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:26:14,670 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2020-08-22 06:26:14,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 06:26:14,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:14,672 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 06:26:14,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:26:14,673 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2020-08-22 06:26:14,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:14,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776850413] [2020-08-22 06:26:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:14,898 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 06:26:14,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776850413] [2020-08-22 06:26:14,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:14,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 06:26:14,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805780853] [2020-08-22 06:26:14,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:26:14,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:14,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:26:14,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:26:14,900 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2020-08-22 06:26:16,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:16,146 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2020-08-22 06:26:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 06:26:16,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 06:26:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:16,153 INFO L225 Difference]: With dead ends: 748 [2020-08-22 06:26:16,153 INFO L226 Difference]: Without dead ends: 452 [2020-08-22 06:26:16,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-22 06:26:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-22 06:26:16,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2020-08-22 06:26:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-22 06:26:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2020-08-22 06:26:16,211 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2020-08-22 06:26:16,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:16,212 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2020-08-22 06:26:16,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:26:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2020-08-22 06:26:16,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 06:26:16,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:16,216 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 06:26:16,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:26:16,217 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:16,217 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2020-08-22 06:26:16,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:16,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705315886] [2020-08-22 06:26:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:16,462 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 06:26:16,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705315886] [2020-08-22 06:26:16,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:16,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 06:26:16,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992978428] [2020-08-22 06:26:16,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:26:16,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:16,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:26:16,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:26:16,467 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2020-08-22 06:26:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:17,940 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2020-08-22 06:26:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 06:26:17,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-08-22 06:26:17,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:17,945 INFO L225 Difference]: With dead ends: 894 [2020-08-22 06:26:17,945 INFO L226 Difference]: Without dead ends: 587 [2020-08-22 06:26:17,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-08-22 06:26:17,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-08-22 06:26:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2020-08-22 06:26:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-22 06:26:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2020-08-22 06:26:17,982 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2020-08-22 06:26:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:17,984 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2020-08-22 06:26:17,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:26:17,985 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2020-08-22 06:26:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 06:26:17,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:17,987 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 06:26:17,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:26:17,987 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:17,988 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2020-08-22 06:26:17,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:17,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137194550] [2020-08-22 06:26:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:18,148 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 06:26:18,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137194550] [2020-08-22 06:26:18,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:18,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:26:18,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46444587] [2020-08-22 06:26:18,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:26:18,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:18,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:26:18,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:26:18,151 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2020-08-22 06:26:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:19,491 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2020-08-22 06:26:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 06:26:19,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-22 06:26:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:19,498 INFO L225 Difference]: With dead ends: 1180 [2020-08-22 06:26:19,499 INFO L226 Difference]: Without dead ends: 838 [2020-08-22 06:26:19,501 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 06:26:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-08-22 06:26:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2020-08-22 06:26:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-22 06:26:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2020-08-22 06:26:19,583 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2020-08-22 06:26:19,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:19,584 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2020-08-22 06:26:19,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:26:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2020-08-22 06:26:19,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 06:26:19,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:19,587 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 06:26:19,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:26:19,588 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:19,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:19,588 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2020-08-22 06:26:19,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:19,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017263254] [2020-08-22 06:26:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 06:26:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:26:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:26:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,810 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 06:26:19,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017263254] [2020-08-22 06:26:19,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:26:19,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 06:26:19,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903469989] [2020-08-22 06:26:19,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:26:19,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:19,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:26:19,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:26:19,813 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 9 states. [2020-08-22 06:26:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:21,604 INFO L93 Difference]: Finished difference Result 2077 states and 2719 transitions. [2020-08-22 06:26:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 06:26:21,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-22 06:26:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:21,619 INFO L225 Difference]: With dead ends: 2077 [2020-08-22 06:26:21,619 INFO L226 Difference]: Without dead ends: 1361 [2020-08-22 06:26:21,625 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 06:26:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-22 06:26:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1278. [2020-08-22 06:26:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-08-22 06:26:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1535 transitions. [2020-08-22 06:26:21,801 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1535 transitions. Word has length 121 [2020-08-22 06:26:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:21,802 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1535 transitions. [2020-08-22 06:26:21,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:26:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1535 transitions. [2020-08-22 06:26:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 06:26:21,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:21,806 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 06:26:21,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:26:21,806 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:21,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:21,807 INFO L82 PathProgramCache]: Analyzing trace with hash 772889349, now seen corresponding path program 1 times [2020-08-22 06:26:21,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:21,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261066734] [2020-08-22 06:26:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:21,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 06:26:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:26:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:22,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:22,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:22,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:26:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:22,068 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 06:26:22,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261066734] [2020-08-22 06:26:22,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:22,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 06:26:22,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055959724] [2020-08-22 06:26:22,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:26:22,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:22,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:26:22,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:26:22,076 INFO L87 Difference]: Start difference. First operand 1278 states and 1535 transitions. Second operand 9 states. [2020-08-22 06:26:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:23,868 INFO L93 Difference]: Finished difference Result 3315 states and 4133 transitions. [2020-08-22 06:26:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 06:26:23,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-08-22 06:26:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:23,880 INFO L225 Difference]: With dead ends: 3315 [2020-08-22 06:26:23,880 INFO L226 Difference]: Without dead ends: 1560 [2020-08-22 06:26:23,888 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 06:26:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-08-22 06:26:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1494. [2020-08-22 06:26:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-08-22 06:26:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1762 transitions. [2020-08-22 06:26:24,016 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1762 transitions. Word has length 121 [2020-08-22 06:26:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:24,017 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1762 transitions. [2020-08-22 06:26:24,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:26:24,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1762 transitions. [2020-08-22 06:26:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 06:26:24,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:24,021 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 06:26:24,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:26:24,022 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:24,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:24,022 INFO L82 PathProgramCache]: Analyzing trace with hash 846884099, now seen corresponding path program 1 times [2020-08-22 06:26:24,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:24,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077062495] [2020-08-22 06:26:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 06:26:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 06:26:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 06:26:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:26:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 06:26:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:26:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 06:26:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:24,242 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 06:26:24,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077062495] [2020-08-22 06:26:24,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:26:24,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 06:26:24,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519402683] [2020-08-22 06:26:24,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:26:24,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:24,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:26:24,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:26:24,245 INFO L87 Difference]: Start difference. First operand 1494 states and 1762 transitions. Second operand 9 states. [2020-08-22 06:26:25,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:25,732 INFO L93 Difference]: Finished difference Result 3041 states and 3692 transitions. [2020-08-22 06:26:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 06:26:25,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-08-22 06:26:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:25,742 INFO L225 Difference]: With dead ends: 3041 [2020-08-22 06:26:25,742 INFO L226 Difference]: Without dead ends: 1568 [2020-08-22 06:26:25,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-08-22 06:26:25,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-08-22 06:26:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1488. [2020-08-22 06:26:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-08-22 06:26:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1728 transitions. [2020-08-22 06:26:25,872 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1728 transitions. Word has length 175 [2020-08-22 06:26:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:25,873 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1728 transitions. [2020-08-22 06:26:25,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:26:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1728 transitions. [2020-08-22 06:26:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 06:26:25,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:25,880 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 06:26:25,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:26:25,881 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:25,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:25,881 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2020-08-22 06:26:25,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:25,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805348923] [2020-08-22 06:26:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:25,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:25,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:25,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 06:26:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:26:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:26:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 06:26:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 06:26:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:26:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:26:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:26,128 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 06:26:26,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805348923] [2020-08-22 06:26:26,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:26:26,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:26:26,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785832301] [2020-08-22 06:26:26,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:26:26,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:26,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:26:26,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:26:26,131 INFO L87 Difference]: Start difference. First operand 1488 states and 1728 transitions. Second operand 10 states. [2020-08-22 06:26:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:28,247 INFO L93 Difference]: Finished difference Result 3478 states and 4131 transitions. [2020-08-22 06:26:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 06:26:28,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-08-22 06:26:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:28,254 INFO L225 Difference]: With dead ends: 3478 [2020-08-22 06:26:28,254 INFO L226 Difference]: Without dead ends: 1006 [2020-08-22 06:26:28,262 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 06:26:28,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-08-22 06:26:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 970. [2020-08-22 06:26:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-22 06:26:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1098 transitions. [2020-08-22 06:26:28,392 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1098 transitions. Word has length 176 [2020-08-22 06:26:28,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:28,393 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1098 transitions. [2020-08-22 06:26:28,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:26:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1098 transitions. [2020-08-22 06:26:28,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 06:26:28,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:28,396 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 06:26:28,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:26:28,397 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:28,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:28,397 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2020-08-22 06:26:28,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:28,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151235831] [2020-08-22 06:26:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:26:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:26:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:26:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:26:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:26:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:26:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:26:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 06:26:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:26:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:26:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:26:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 06:26:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:26:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:26:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:26:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:28,714 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 06:26:28,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151235831] [2020-08-22 06:26:28,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:26:28,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:26:28,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768559650] [2020-08-22 06:26:28,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:26:28,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:28,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:26:28,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:26:28,716 INFO L87 Difference]: Start difference. First operand 970 states and 1098 transitions. Second operand 12 states. [2020-08-22 06:26:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:30,771 INFO L93 Difference]: Finished difference Result 1204 states and 1390 transitions. [2020-08-22 06:26:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 06:26:30,771 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-08-22 06:26:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:30,773 INFO L225 Difference]: With dead ends: 1204 [2020-08-22 06:26:30,773 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 06:26:30,780 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 06:26:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 06:26:30,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 06:26:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 06:26:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 06:26:30,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-22 06:26:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:30,781 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 06:26:30,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:26:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 06:26:30,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 06:26:30,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 06:26:30,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 06:26:31,417 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 06:26:31,594 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 06:26:31,852 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 06:26:32,094 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 06:26:32,275 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-08-22 06:26:33,362 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-08-22 06:26:42,006 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-08-22 06:26:43,280 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 137 DAG size of output: 57 [2020-08-22 06:26:43,684 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-22 06:26:44,310 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 06:26:44,965 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 06:26:45,118 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-08-22 06:26:45,749 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 06:26:46,359 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 06:26:46,484 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-22 06:26:47,128 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 06:26:48,020 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 82 [2020-08-22 06:26:48,171 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-08-22 06:26:48,862 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2020-08-22 06:26:50,279 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2020-08-22 06:26:50,699 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-08-22 06:26:51,662 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-08-22 06:26:52,660 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-08-22 06:26:53,756 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 166 DAG size of output: 83 [2020-08-22 06:26:54,377 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 06:26:54,651 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-08-22 06:26:56,932 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-22 06:26:57,763 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 55 [2020-08-22 06:26:58,083 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-08-22 06:27:00,324 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-22 06:27:00,655 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-08-22 06:27:01,292 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-08-22 06:27:03,596 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 198 DAG size of output: 99 [2020-08-22 06:27:03,701 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54