/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 false -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-eb0fd7c [2020-09-21 10:31:09,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:31:09,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:31:09,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:31:09,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:31:09,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:31:09,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:31:09,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:31:09,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:31:09,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:31:09,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:31:09,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:31:09,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:31:09,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:31:09,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:31:09,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:31:09,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:31:09,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:31:09,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:31:09,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:31:09,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:31:09,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:31:09,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:31:09,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:31:09,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:31:09,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:31:09,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:31:09,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:31:09,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:31:09,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:31:09,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:31:09,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:31:09,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:31:09,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:31:09,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:31:09,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:31:09,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:31:09,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:31:09,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:31:09,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:31:09,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:31:09,854 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 [2020-09-21 10:31:09,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:31:09,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:31:09,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:31:09,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:31:09,881 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:31:09,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:31:09,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:31:09,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:31:09,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:31:09,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:31:09,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:31:09,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:31:09,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:31:09,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:31:09,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:31:09,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:31:09,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:31:09,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:31:09,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:31:09,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:31:09,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:31:09,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:31:09,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:31:09,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:31:09,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:31:09,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:31:09,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:31:09,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:31:09,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:31:09,886 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 -> false [2020-09-21 10:31:10,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:31:10,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:31:10,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:31:10,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:31:10,347 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:31:10,348 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-09-21 10:31:10,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59be1f4ae/0e929223ec29471882f2955753288201/FLAG48d5f6923 [2020-09-21 10:31:10,982 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:31:10,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-09-21 10:31:10,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59be1f4ae/0e929223ec29471882f2955753288201/FLAG48d5f6923 [2020-09-21 10:31:11,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59be1f4ae/0e929223ec29471882f2955753288201 [2020-09-21 10:31:11,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:31:11,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:31:11,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:31:11,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:31:11,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:31:11,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:31:11" (1/1) ... [2020-09-21 10:31:11,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bbc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11, skipping insertion in model container [2020-09-21 10:31:11,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:31:11" (1/1) ... [2020-09-21 10:31:11,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:31:11,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:31:11,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:31:11,614 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:31:11,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:31:11,781 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:31:11,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11 WrapperNode [2020-09-21 10:31:11,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:31:11,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:31:11,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:31:11,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:31:11,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11" (1/1) ... [2020-09-21 10:31:11,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11" (1/1) ... [2020-09-21 10:31:11,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11" (1/1) ... [2020-09-21 10:31:11,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11" (1/1) ... [2020-09-21 10:31:11,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11" (1/1) ... [2020-09-21 10:31:11,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11" (1/1) ... [2020-09-21 10:31:11,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11" (1/1) ... [2020-09-21 10:31:11,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:31:11,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:31:11,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:31:11,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:31:11,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11" (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 [2020-09-21 10:31:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:31:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:31:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-21 10:31:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-09-21 10:31:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-09-21 10:31:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-09-21 10:31:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-09-21 10:31:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-09-21 10:31:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-21 10:31:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-21 10:31:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-21 10:31:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-09-21 10:31:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-09-21 10:31:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-09-21 10:31:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-09-21 10:31:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-09-21 10:31:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-09-21 10:31:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-21 10:31:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-21 10:31:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-21 10:31:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:31:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:31:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-21 10:31:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-09-21 10:31:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-09-21 10:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-09-21 10:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-09-21 10:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-09-21 10:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-09-21 10:31:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-21 10:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-21 10:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-21 10:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-09-21 10:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-09-21 10:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-09-21 10:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-09-21 10:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-09-21 10:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-21 10:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-21 10:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-21 10:31:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:31:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:31:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:31:12,444 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:31:12,444 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 10:31:12,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:31:12 BoogieIcfgContainer [2020-09-21 10:31:12,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:31:12,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:31:12,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:31:12,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:31:12,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:31:11" (1/3) ... [2020-09-21 10:31:12,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e42c950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:31:12, skipping insertion in model container [2020-09-21 10:31:12,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:11" (2/3) ... [2020-09-21 10:31:12,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e42c950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:31:12, skipping insertion in model container [2020-09-21 10:31:12,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:31:12" (3/3) ... [2020-09-21 10:31:12,459 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-09-21 10:31:12,469 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:31:12,480 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:31:12,502 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:31:12,533 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:31:12,534 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:31:12,534 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:31:12,534 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:31:12,534 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:31:12,534 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:31:12,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:31:12,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:31:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-09-21 10:31:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 10:31:12,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:12,576 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] [2020-09-21 10:31:12,576 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:12,583 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-09-21 10:31:12,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:12,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904762265] [2020-09-21 10:31:12,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:12,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:13,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904762265] [2020-09-21 10:31:13,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:13,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:31:13,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357367911] [2020-09-21 10:31:13,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:31:13,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:13,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:31:13,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:13,229 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2020-09-21 10:31:15,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:15,422 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2020-09-21 10:31:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:31:15,424 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-09-21 10:31:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:15,448 INFO L225 Difference]: With dead ends: 501 [2020-09-21 10:31:15,448 INFO L226 Difference]: Without dead ends: 357 [2020-09-21 10:31:15,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:31:15,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-09-21 10:31:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2020-09-21 10:31:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-21 10:31:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2020-09-21 10:31:15,555 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2020-09-21 10:31:15,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:15,556 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2020-09-21 10:31:15,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:31:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2020-09-21 10:31:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 10:31:15,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:15,560 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] [2020-09-21 10:31:15,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:31:15,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:15,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:15,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2020-09-21 10:31:15,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:15,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122589440] [2020-09-21 10:31:15,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:15,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122589440] [2020-09-21 10:31:15,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:15,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:31:15,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954980465] [2020-09-21 10:31:15,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:31:15,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:15,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:31:15,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:31:15,827 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2020-09-21 10:31:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:17,099 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-09-21 10:31:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:31:17,100 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-09-21 10:31:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:17,105 INFO L225 Difference]: With dead ends: 573 [2020-09-21 10:31:17,105 INFO L226 Difference]: Without dead ends: 348 [2020-09-21 10:31:17,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:31:17,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-09-21 10:31:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2020-09-21 10:31:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-21 10:31:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2020-09-21 10:31:17,205 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2020-09-21 10:31:17,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:17,205 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2020-09-21 10:31:17,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:31:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2020-09-21 10:31:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 10:31:17,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:17,217 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] [2020-09-21 10:31:17,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:31:17,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:17,219 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2020-09-21 10:31:17,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:17,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609354843] [2020-09-21 10:31:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:17,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609354843] [2020-09-21 10:31:17,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:17,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:31:17,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368953662] [2020-09-21 10:31:17,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:31:17,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:17,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:31:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:31:17,408 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2020-09-21 10:31:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:19,001 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2020-09-21 10:31:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:31:19,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-09-21 10:31:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:19,006 INFO L225 Difference]: With dead ends: 696 [2020-09-21 10:31:19,007 INFO L226 Difference]: Without dead ends: 471 [2020-09-21 10:31:19,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-09-21 10:31:19,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-21 10:31:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2020-09-21 10:31:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-09-21 10:31:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-09-21 10:31:19,057 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2020-09-21 10:31:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:19,059 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-09-21 10:31:19,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:31:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-09-21 10:31:19,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 10:31:19,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:19,063 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] [2020-09-21 10:31:19,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:31:19,063 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:19,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:19,064 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2020-09-21 10:31:19,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:19,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971583654] [2020-09-21 10:31:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:19,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971583654] [2020-09-21 10:31:19,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:19,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:31:19,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218486056] [2020-09-21 10:31:19,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:31:19,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:19,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:31:19,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:31:19,361 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2020-09-21 10:31:20,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:20,853 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2020-09-21 10:31:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:31:20,856 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-09-21 10:31:20,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:20,862 INFO L225 Difference]: With dead ends: 718 [2020-09-21 10:31:20,862 INFO L226 Difference]: Without dead ends: 442 [2020-09-21 10:31:20,864 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 [2020-09-21 10:31:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-09-21 10:31:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2020-09-21 10:31:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-09-21 10:31:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2020-09-21 10:31:20,905 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2020-09-21 10:31:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:20,906 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2020-09-21 10:31:20,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:31:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2020-09-21 10:31:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 10:31:20,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:20,907 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] [2020-09-21 10:31:20,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:31:20,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:20,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:20,910 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2020-09-21 10:31:20,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:20,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197353303] [2020-09-21 10:31:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:21,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197353303] [2020-09-21 10:31:21,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:21,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:31:21,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258639024] [2020-09-21 10:31:21,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:31:21,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:21,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:31:21,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:31:21,136 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2020-09-21 10:31:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:22,444 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2020-09-21 10:31:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:31:22,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-09-21 10:31:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:22,448 INFO L225 Difference]: With dead ends: 748 [2020-09-21 10:31:22,449 INFO L226 Difference]: Without dead ends: 452 [2020-09-21 10:31:22,450 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 [2020-09-21 10:31:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-09-21 10:31:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2020-09-21 10:31:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-09-21 10:31:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2020-09-21 10:31:22,486 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2020-09-21 10:31:22,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:22,486 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2020-09-21 10:31:22,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:31:22,487 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2020-09-21 10:31:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 10:31:22,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:22,488 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] [2020-09-21 10:31:22,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:31:22,489 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2020-09-21 10:31:22,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:22,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507419401] [2020-09-21 10:31:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:22,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507419401] [2020-09-21 10:31:22,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:22,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:31:22,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444222027] [2020-09-21 10:31:22,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:31:22,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:22,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:31:22,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:31:22,677 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2020-09-21 10:31:24,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:24,303 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2020-09-21 10:31:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:31:24,304 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-09-21 10:31:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:24,310 INFO L225 Difference]: With dead ends: 894 [2020-09-21 10:31:24,310 INFO L226 Difference]: Without dead ends: 587 [2020-09-21 10:31:24,312 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 [2020-09-21 10:31:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-09-21 10:31:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2020-09-21 10:31:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-09-21 10:31:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2020-09-21 10:31:24,355 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2020-09-21 10:31:24,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:24,357 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2020-09-21 10:31:24,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:31:24,357 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2020-09-21 10:31:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 10:31:24,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:24,359 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] [2020-09-21 10:31:24,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:31:24,359 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:24,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:24,359 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2020-09-21 10:31:24,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:24,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629632167] [2020-09-21 10:31:24,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:24,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629632167] [2020-09-21 10:31:24,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:24,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:31:24,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669272711] [2020-09-21 10:31:24,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:31:24,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:24,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:31:24,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:31:24,519 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2020-09-21 10:31:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:25,914 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2020-09-21 10:31:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:31:25,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-09-21 10:31:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:25,923 INFO L225 Difference]: With dead ends: 1180 [2020-09-21 10:31:25,924 INFO L226 Difference]: Without dead ends: 838 [2020-09-21 10:31:25,927 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 [2020-09-21 10:31:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-09-21 10:31:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2020-09-21 10:31:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-09-21 10:31:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2020-09-21 10:31:26,009 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2020-09-21 10:31:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:26,010 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2020-09-21 10:31:26,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:31:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2020-09-21 10:31:26,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-21 10:31:26,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:26,013 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] [2020-09-21 10:31:26,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:31:26,013 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:26,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:26,014 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2020-09-21 10:31:26,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:26,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852297187] [2020-09-21 10:31:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 10:31:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:31:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 10:31:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-21 10:31:26,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852297187] [2020-09-21 10:31:26,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:31:26,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:31:26,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063896493] [2020-09-21 10:31:26,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:31:26,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:26,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:31:26,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:26,270 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 9 states. [2020-09-21 10:31:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:28,115 INFO L93 Difference]: Finished difference Result 2077 states and 2719 transitions. [2020-09-21 10:31:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:31:28,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-09-21 10:31:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:28,124 INFO L225 Difference]: With dead ends: 2077 [2020-09-21 10:31:28,124 INFO L226 Difference]: Without dead ends: 1361 [2020-09-21 10:31:28,128 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 [2020-09-21 10:31:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-21 10:31:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1278. [2020-09-21 10:31:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-09-21 10:31:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1535 transitions. [2020-09-21 10:31:28,236 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1535 transitions. Word has length 121 [2020-09-21 10:31:28,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:28,236 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1535 transitions. [2020-09-21 10:31:28,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:31:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1535 transitions. [2020-09-21 10:31:28,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-21 10:31:28,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:28,239 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] [2020-09-21 10:31:28,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:31:28,240 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:28,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:28,240 INFO L82 PathProgramCache]: Analyzing trace with hash 772889349, now seen corresponding path program 1 times [2020-09-21 10:31:28,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:28,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200809177] [2020-09-21 10:31:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 10:31:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:31:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 10:31:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-21 10:31:28,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200809177] [2020-09-21 10:31:28,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:28,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:31:28,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111131461] [2020-09-21 10:31:28,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:31:28,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:28,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:31:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:28,482 INFO L87 Difference]: Start difference. First operand 1278 states and 1535 transitions. Second operand 9 states. [2020-09-21 10:31:30,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:30,441 INFO L93 Difference]: Finished difference Result 3315 states and 4133 transitions. [2020-09-21 10:31:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 10:31:30,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-09-21 10:31:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:30,450 INFO L225 Difference]: With dead ends: 3315 [2020-09-21 10:31:30,450 INFO L226 Difference]: Without dead ends: 1560 [2020-09-21 10:31:30,457 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 [2020-09-21 10:31:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-09-21 10:31:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1494. [2020-09-21 10:31:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-09-21 10:31:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1762 transitions. [2020-09-21 10:31:30,573 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1762 transitions. Word has length 121 [2020-09-21 10:31:30,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:30,573 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1762 transitions. [2020-09-21 10:31:30,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:31:30,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1762 transitions. [2020-09-21 10:31:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-21 10:31:30,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:30,578 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] [2020-09-21 10:31:30,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:31:30,578 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:30,579 INFO L82 PathProgramCache]: Analyzing trace with hash 846884099, now seen corresponding path program 1 times [2020-09-21 10:31:30,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:30,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735252215] [2020-09-21 10:31:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-21 10:31:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 10:31:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-21 10:31:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:31:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 10:31:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:31:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-21 10:31:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-09-21 10:31:30,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735252215] [2020-09-21 10:31:30,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:31:30,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:31:30,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507282510] [2020-09-21 10:31:30,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:31:30,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:30,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:31:30,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:30,869 INFO L87 Difference]: Start difference. First operand 1494 states and 1762 transitions. Second operand 9 states. [2020-09-21 10:31:32,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:32,446 INFO L93 Difference]: Finished difference Result 3041 states and 3692 transitions. [2020-09-21 10:31:32,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:31:32,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-09-21 10:31:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:32,456 INFO L225 Difference]: With dead ends: 3041 [2020-09-21 10:31:32,456 INFO L226 Difference]: Without dead ends: 1568 [2020-09-21 10:31:32,462 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 [2020-09-21 10:31:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-09-21 10:31:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1488. [2020-09-21 10:31:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-09-21 10:31:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1728 transitions. [2020-09-21 10:31:32,579 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1728 transitions. Word has length 175 [2020-09-21 10:31:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:32,579 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1728 transitions. [2020-09-21 10:31:32,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:31:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1728 transitions. [2020-09-21 10:31:32,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-21 10:31:32,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:32,586 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] [2020-09-21 10:31:32,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:31:32,586 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:32,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:32,587 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2020-09-21 10:31:32,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:32,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405613415] [2020-09-21 10:31:32,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 10:31:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:31:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 10:31:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-21 10:31:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-21 10:31:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:31:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-21 10:31:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-21 10:31:32,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405613415] [2020-09-21 10:31:32,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:31:32,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:31:32,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224769564] [2020-09-21 10:31:32,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:31:32,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:32,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:31:32,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:31:32,949 INFO L87 Difference]: Start difference. First operand 1488 states and 1728 transitions. Second operand 10 states. [2020-09-21 10:31:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:34,780 INFO L93 Difference]: Finished difference Result 3478 states and 4131 transitions. [2020-09-21 10:31:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 10:31:34,780 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-09-21 10:31:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:34,786 INFO L225 Difference]: With dead ends: 3478 [2020-09-21 10:31:34,787 INFO L226 Difference]: Without dead ends: 1006 [2020-09-21 10:31:34,794 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 [2020-09-21 10:31:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-09-21 10:31:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 970. [2020-09-21 10:31:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-21 10:31:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1098 transitions. [2020-09-21 10:31:34,875 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1098 transitions. Word has length 176 [2020-09-21 10:31:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:34,876 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1098 transitions. [2020-09-21 10:31:34,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:31:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1098 transitions. [2020-09-21 10:31:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-21 10:31:34,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:34,879 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] [2020-09-21 10:31:34,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:31:34,879 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:34,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:34,879 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2020-09-21 10:31:34,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:34,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656157659] [2020-09-21 10:31:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:31:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 10:31:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 10:31:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:31:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:31:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-21 10:31:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:31:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:31:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:31:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-21 10:31:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:31:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-21 10:31:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-21 10:31:35,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656157659] [2020-09-21 10:31:35,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:31:35,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 10:31:35,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181829304] [2020-09-21 10:31:35,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:31:35,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:35,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:31:35,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:31:35,337 INFO L87 Difference]: Start difference. First operand 970 states and 1098 transitions. Second operand 12 states. [2020-09-21 10:31:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:37,676 INFO L93 Difference]: Finished difference Result 1204 states and 1390 transitions. [2020-09-21 10:31:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:31:37,677 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-09-21 10:31:37,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:37,679 INFO L225 Difference]: With dead ends: 1204 [2020-09-21 10:31:37,679 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:31:37,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-09-21 10:31:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:31:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:31:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:31:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:31:37,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-09-21 10:31:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:37,683 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:31:37,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:31:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:31:37,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:31:37,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 10:31:37,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:31:40,343 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-09-21 10:31:40,758 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-09-21 10:31:41,183 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-09-21 10:31:41,544 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-09-21 10:31:41,932 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-09-21 10:31:42,248 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2020-09-21 10:31:42,410 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-09-21 10:31:42,598 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2020-09-21 10:31:42,775 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2020-09-21 10:31:42,947 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2020-09-21 10:31:43,118 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2020-09-21 10:31:43,290 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2020-09-21 10:31:43,413 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-09-21 10:31:43,587 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-09-21 10:31:43,713 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-09-21 10:31:43,892 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2020-09-21 10:31:44,083 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-09-21 10:31:44,897 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-09-21 10:31:45,662 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-09-21 10:31:45,908 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-09-21 10:31:46,361 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-09-21 10:31:47,482 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-09-21 10:31:47,656 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-09-21 10:31:48,004 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2020-09-21 10:31:48,728 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-09-21 10:31:49,669 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-09-21 10:31:53,429 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-09-21 10:31:54,099 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-09-21 10:31:54,427 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-09-21 10:31:54,537 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-09-21 10:31:54,647 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-09-21 10:31:54,757 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-09-21 10:31:55,066 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-09-21 10:31:55,202 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-09-21 10:31:55,808 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-09-21 10:31:55,986 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-09-21 10:31:56,117 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-09-21 10:31:56,427 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-09-21 10:31:56,974 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2020-09-21 10:31:57,202 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:31:57,379 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-21 10:31:57,557 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-09-21 10:31:57,682 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:31:57,860 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-21 10:31:58,093 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-09-21 10:31:58,226 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:31:58,408 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-09-21 10:31:58,530 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:31:58,650 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:31:58,768 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:31:58,886 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:31:59,006 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:31:59,123 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:31:59,243 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:31:59,434 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-09-21 10:31:59,601 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-09-21 10:31:59,768 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-09-21 10:31:59,924 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-09-21 10:32:00,158 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-09-21 10:32:00,360 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-21 10:32:00,562 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-21 10:32:00,764 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-21 10:32:00,882 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:01,005 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:01,167 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-09-21 10:32:01,373 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-09-21 10:32:01,577 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2020-09-21 10:32:01,742 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-09-21 10:32:01,860 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:01,978 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:02,098 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:02,219 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:02,395 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-09-21 10:32:02,516 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:02,636 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:02,829 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-09-21 10:32:02,988 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-09-21 10:32:03,186 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-21 10:32:03,409 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2020-09-21 10:32:03,574 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-09-21 10:32:03,745 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-09-21 10:32:03,917 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-09-21 10:32:04,130 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-09-21 10:32:04,250 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:04,367 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:04,562 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-09-21 10:32:05,679 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:05,857 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-21 10:32:06,033 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-09-21 10:32:06,157 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:06,334 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-21 10:32:06,566 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-09-21 10:32:06,687 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:06,870 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-09-21 10:32:06,991 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:07,111 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:07,228 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:07,346 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:07,466 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:07,584 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:07,704 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:07,891 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-09-21 10:32:08,058 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-09-21 10:32:08,224 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-09-21 10:32:08,390 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-09-21 10:32:08,623 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-09-21 10:32:08,826 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-21 10:32:09,028 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-21 10:32:09,230 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-21 10:32:09,349 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:09,470 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:09,633 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-09-21 10:32:09,828 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-09-21 10:32:10,032 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2020-09-21 10:32:10,197 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-09-21 10:32:10,314 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:10,431 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:10,553 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:10,674 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:10,851 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-09-21 10:32:10,972 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:11,090 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:11,293 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-09-21 10:32:11,452 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-09-21 10:32:11,663 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-21 10:32:11,888 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2020-09-21 10:32:12,053 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-09-21 10:32:12,225 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-09-21 10:32:12,397 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-09-21 10:32:12,610 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-09-21 10:32:12,730 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-09-21 10:32:12,848 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-09-21 10:32:13,030 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73