/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:41:20,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:41:20,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:41:20,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:41:20,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:41:20,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:41:20,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:41:20,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:41:20,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:41:20,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:41:20,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:41:20,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:41:20,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:41:20,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:41:20,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:41:20,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:41:20,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:41:20,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:41:20,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:41:20,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:41:20,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:41:20,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:41:20,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:41:20,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:41:20,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:41:20,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:41:20,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:41:20,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:41:20,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:41:20,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:41:20,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:41:20,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:41:20,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:41:20,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:41:20,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:41:20,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:41:20,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:41:20,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:41:20,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:41:20,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:41:20,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:41:20,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:41:20,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:41:21,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:41:21,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:41:21,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:41:21,001 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:41:21,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:41:21,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:41:21,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:41:21,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:41:21,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:41:21,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:41:21,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:41:21,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:41:21,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:41:21,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:41:21,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:41:21,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:41:21,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:41:21,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:41:21,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:41:21,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:41:21,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:41:21,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:41:21,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:41:21,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:41:21,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:41:21,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:41:21,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:41:21,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:41:21,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:41:21,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:41:21,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:41:21,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:41:21,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:41:21,322 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:41:21,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-21 16:41:21,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/551e8df44/4a49043552fd4c378895e7a745064e21/FLAG8ba060c52 [2020-08-21 16:41:21,846 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:41:21,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-08-21 16:41:21,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/551e8df44/4a49043552fd4c378895e7a745064e21/FLAG8ba060c52 [2020-08-21 16:41:22,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/551e8df44/4a49043552fd4c378895e7a745064e21 [2020-08-21 16:41:22,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:41:22,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:41:22,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:41:22,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:41:22,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:41:22,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:41:22" (1/1) ... [2020-08-21 16:41:22,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22, skipping insertion in model container [2020-08-21 16:41:22,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:41:22" (1/1) ... [2020-08-21 16:41:22,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:41:22,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:41:22,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:41:22,490 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:41:22,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:41:22,635 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:41:22,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22 WrapperNode [2020-08-21 16:41:22,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:41:22,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:41:22,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:41:22,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:41:22,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22" (1/1) ... [2020-08-21 16:41:22,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22" (1/1) ... [2020-08-21 16:41:22,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22" (1/1) ... [2020-08-21 16:41:22,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22" (1/1) ... [2020-08-21 16:41:22,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22" (1/1) ... [2020-08-21 16:41:22,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22" (1/1) ... [2020-08-21 16:41:22,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22" (1/1) ... [2020-08-21 16:41:22,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:41:22,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:41:22,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:41:22,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:41:22,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:41:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:41:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:41:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-21 16:41:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-21 16:41:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-21 16:41:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-21 16:41:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-21 16:41:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-21 16:41:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-21 16:41:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-21 16:41:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-21 16:41:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-21 16:41:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-21 16:41:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-21 16:41:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-21 16:41:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-21 16:41:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-21 16:41:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-21 16:41:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-21 16:41:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-21 16:41:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-21 16:41:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-21 16:41:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:41:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:41:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:41:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-21 16:41:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-21 16:41:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-21 16:41:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-21 16:41:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-21 16:41:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-21 16:41:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-21 16:41:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-21 16:41:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-21 16:41:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-21 16:41:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-21 16:41:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-21 16:41:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-21 16:41:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-21 16:41:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-21 16:41:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-21 16:41:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-21 16:41:22,758 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-21 16:41:22,758 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-21 16:41:22,758 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-21 16:41:22,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:41:22,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:41:22,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:41:23,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:41:23,250 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 16:41:23,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:41:23 BoogieIcfgContainer [2020-08-21 16:41:23,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:41:23,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:41:23,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:41:23,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:41:23,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:41:22" (1/3) ... [2020-08-21 16:41:23,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e58637b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:41:23, skipping insertion in model container [2020-08-21 16:41:23,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:41:22" (2/3) ... [2020-08-21 16:41:23,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e58637b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:41:23, skipping insertion in model container [2020-08-21 16:41:23,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:41:23" (3/3) ... [2020-08-21 16:41:23,264 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-08-21 16:41:23,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:41:23,282 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:41:23,296 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:41:23,319 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:41:23,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:41:23,319 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:41:23,320 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:41:23,320 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:41:23,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:41:23,320 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:41:23,320 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:41:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 16:41:23,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:23,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:23,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:23,356 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:23,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:23,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1996614335, now seen corresponding path program 1 times [2020-08-21 16:41:23,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:23,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810658539] [2020-08-21 16:41:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:23,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810658539] [2020-08-21 16:41:23,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:23,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:41:23,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582104952] [2020-08-21 16:41:23,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:41:23,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:23,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:41:23,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:41:23,939 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 8 states. [2020-08-21 16:41:25,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:25,380 INFO L93 Difference]: Finished difference Result 412 states and 626 transitions. [2020-08-21 16:41:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:41:25,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-21 16:41:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:25,398 INFO L225 Difference]: With dead ends: 412 [2020-08-21 16:41:25,398 INFO L226 Difference]: Without dead ends: 247 [2020-08-21 16:41:25,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:41:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-08-21 16:41:25,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 160. [2020-08-21 16:41:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-21 16:41:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 212 transitions. [2020-08-21 16:41:25,479 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 212 transitions. Word has length 90 [2020-08-21 16:41:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:25,480 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 212 transitions. [2020-08-21 16:41:25,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:41:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 212 transitions. [2020-08-21 16:41:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:25,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:25,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:25,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:41:25,485 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:25,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash -387310403, now seen corresponding path program 1 times [2020-08-21 16:41:25,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:25,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231833185] [2020-08-21 16:41:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:25,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231833185] [2020-08-21 16:41:25,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:25,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:41:25,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139512036] [2020-08-21 16:41:25,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:41:25,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:25,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:41:25,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:41:25,731 INFO L87 Difference]: Start difference. First operand 160 states and 212 transitions. Second operand 9 states. [2020-08-21 16:41:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:27,808 INFO L93 Difference]: Finished difference Result 579 states and 839 transitions. [2020-08-21 16:41:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:41:27,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-08-21 16:41:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:27,821 INFO L225 Difference]: With dead ends: 579 [2020-08-21 16:41:27,821 INFO L226 Difference]: Without dead ends: 439 [2020-08-21 16:41:27,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:41:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-21 16:41:27,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 294. [2020-08-21 16:41:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 16:41:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 393 transitions. [2020-08-21 16:41:27,881 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 393 transitions. Word has length 90 [2020-08-21 16:41:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:27,881 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 393 transitions. [2020-08-21 16:41:27,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:41:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 393 transitions. [2020-08-21 16:41:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:27,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:27,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:27,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:41:27,886 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:27,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1952833149, now seen corresponding path program 1 times [2020-08-21 16:41:27,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:27,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963658622] [2020-08-21 16:41:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:27,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:28,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963658622] [2020-08-21 16:41:28,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:28,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:41:28,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211631446] [2020-08-21 16:41:28,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:41:28,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:28,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:41:28,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:41:28,123 INFO L87 Difference]: Start difference. First operand 294 states and 393 transitions. Second operand 10 states. [2020-08-21 16:41:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:29,297 INFO L93 Difference]: Finished difference Result 704 states and 993 transitions. [2020-08-21 16:41:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:41:29,300 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 16:41:29,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:29,306 INFO L225 Difference]: With dead ends: 704 [2020-08-21 16:41:29,306 INFO L226 Difference]: Without dead ends: 430 [2020-08-21 16:41:29,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:41:29,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-08-21 16:41:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 294. [2020-08-21 16:41:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 16:41:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 386 transitions. [2020-08-21 16:41:29,372 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 386 transitions. Word has length 90 [2020-08-21 16:41:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:29,373 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 386 transitions. [2020-08-21 16:41:29,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:41:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 386 transitions. [2020-08-21 16:41:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:29,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:29,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:29,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:41:29,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:29,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:29,377 INFO L82 PathProgramCache]: Analyzing trace with hash 227206333, now seen corresponding path program 1 times [2020-08-21 16:41:29,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:29,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066510382] [2020-08-21 16:41:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:29,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066510382] [2020-08-21 16:41:29,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:29,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:41:29,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007528489] [2020-08-21 16:41:29,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:41:29,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:29,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:41:29,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:41:29,552 INFO L87 Difference]: Start difference. First operand 294 states and 386 transitions. Second operand 10 states. [2020-08-21 16:41:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:30,773 INFO L93 Difference]: Finished difference Result 700 states and 971 transitions. [2020-08-21 16:41:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:41:30,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 16:41:30,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:30,780 INFO L225 Difference]: With dead ends: 700 [2020-08-21 16:41:30,780 INFO L226 Difference]: Without dead ends: 426 [2020-08-21 16:41:30,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:41:30,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-21 16:41:30,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 294. [2020-08-21 16:41:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 16:41:30,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 379 transitions. [2020-08-21 16:41:30,831 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 379 transitions. Word has length 90 [2020-08-21 16:41:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:30,831 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 379 transitions. [2020-08-21 16:41:30,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:41:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 379 transitions. [2020-08-21 16:41:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:30,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:30,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:30,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:41:30,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:30,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1418466941, now seen corresponding path program 1 times [2020-08-21 16:41:30,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:30,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969397472] [2020-08-21 16:41:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:30,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:30,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:30,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:30,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:31,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:31,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:31,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:31,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:31,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969397472] [2020-08-21 16:41:31,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:31,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:41:31,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656834123] [2020-08-21 16:41:31,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:41:31,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:31,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:41:31,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:41:31,030 INFO L87 Difference]: Start difference. First operand 294 states and 379 transitions. Second operand 10 states. [2020-08-21 16:41:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:32,637 INFO L93 Difference]: Finished difference Result 855 states and 1230 transitions. [2020-08-21 16:41:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:41:32,638 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 16:41:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:32,642 INFO L225 Difference]: With dead ends: 855 [2020-08-21 16:41:32,642 INFO L226 Difference]: Without dead ends: 581 [2020-08-21 16:41:32,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-21 16:41:32,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-08-21 16:41:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 366. [2020-08-21 16:41:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-08-21 16:41:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 457 transitions. [2020-08-21 16:41:32,681 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 457 transitions. Word has length 90 [2020-08-21 16:41:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:32,681 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 457 transitions. [2020-08-21 16:41:32,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:41:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 457 transitions. [2020-08-21 16:41:32,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:32,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:32,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:32,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:41:32,683 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:32,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:32,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1504622653, now seen corresponding path program 1 times [2020-08-21 16:41:32,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:32,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78961966] [2020-08-21 16:41:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:32,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78961966] [2020-08-21 16:41:32,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:32,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:41:32,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784426122] [2020-08-21 16:41:32,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:41:32,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:32,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:41:32,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:41:32,899 INFO L87 Difference]: Start difference. First operand 366 states and 457 transitions. Second operand 10 states. [2020-08-21 16:41:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:34,635 INFO L93 Difference]: Finished difference Result 877 states and 1164 transitions. [2020-08-21 16:41:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:41:34,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 16:41:34,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:34,640 INFO L225 Difference]: With dead ends: 877 [2020-08-21 16:41:34,640 INFO L226 Difference]: Without dead ends: 532 [2020-08-21 16:41:34,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:41:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-21 16:41:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 376. [2020-08-21 16:41:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-08-21 16:41:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 465 transitions. [2020-08-21 16:41:34,717 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 465 transitions. Word has length 90 [2020-08-21 16:41:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:34,718 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 465 transitions. [2020-08-21 16:41:34,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:41:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 465 transitions. [2020-08-21 16:41:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:34,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:34,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:34,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:41:34,719 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:34,719 INFO L82 PathProgramCache]: Analyzing trace with hash -523963457, now seen corresponding path program 1 times [2020-08-21 16:41:34,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:34,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376433636] [2020-08-21 16:41:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:34,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376433636] [2020-08-21 16:41:34,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:34,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:41:34,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205625052] [2020-08-21 16:41:34,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:41:34,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:34,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:41:34,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:41:34,961 INFO L87 Difference]: Start difference. First operand 376 states and 465 transitions. Second operand 10 states. [2020-08-21 16:41:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:36,545 INFO L93 Difference]: Finished difference Result 915 states and 1208 transitions. [2020-08-21 16:41:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:41:36,546 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 16:41:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:36,550 INFO L225 Difference]: With dead ends: 915 [2020-08-21 16:41:36,550 INFO L226 Difference]: Without dead ends: 560 [2020-08-21 16:41:36,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:41:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-08-21 16:41:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 396. [2020-08-21 16:41:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-08-21 16:41:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 485 transitions. [2020-08-21 16:41:36,590 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 485 transitions. Word has length 90 [2020-08-21 16:41:36,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:36,591 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 485 transitions. [2020-08-21 16:41:36,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:41:36,591 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 485 transitions. [2020-08-21 16:41:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:36,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:36,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:36,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:41:36,593 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:36,594 INFO L82 PathProgramCache]: Analyzing trace with hash -275816963, now seen corresponding path program 1 times [2020-08-21 16:41:36,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:36,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891884456] [2020-08-21 16:41:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:36,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891884456] [2020-08-21 16:41:36,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:36,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:41:36,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525601937] [2020-08-21 16:41:36,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:41:36,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:36,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:41:36,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:41:36,808 INFO L87 Difference]: Start difference. First operand 396 states and 485 transitions. Second operand 10 states. [2020-08-21 16:41:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:38,285 INFO L93 Difference]: Finished difference Result 939 states and 1222 transitions. [2020-08-21 16:41:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:41:38,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 16:41:38,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:38,290 INFO L225 Difference]: With dead ends: 939 [2020-08-21 16:41:38,290 INFO L226 Difference]: Without dead ends: 564 [2020-08-21 16:41:38,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:41:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-21 16:41:38,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 406. [2020-08-21 16:41:38,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-08-21 16:41:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 493 transitions. [2020-08-21 16:41:38,335 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 493 transitions. Word has length 90 [2020-08-21 16:41:38,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:38,335 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 493 transitions. [2020-08-21 16:41:38,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:41:38,336 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 493 transitions. [2020-08-21 16:41:38,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:38,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:38,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:38,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:41:38,337 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:38,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:38,338 INFO L82 PathProgramCache]: Analyzing trace with hash -348203521, now seen corresponding path program 1 times [2020-08-21 16:41:38,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:38,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691349875] [2020-08-21 16:41:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:38,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691349875] [2020-08-21 16:41:38,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:38,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:41:38,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300534215] [2020-08-21 16:41:38,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:41:38,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:38,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:41:38,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:41:38,542 INFO L87 Difference]: Start difference. First operand 406 states and 493 transitions. Second operand 10 states. [2020-08-21 16:41:40,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:40,264 INFO L93 Difference]: Finished difference Result 1144 states and 1493 transitions. [2020-08-21 16:41:40,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 16:41:40,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 16:41:40,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:40,269 INFO L225 Difference]: With dead ends: 1144 [2020-08-21 16:41:40,270 INFO L226 Difference]: Without dead ends: 758 [2020-08-21 16:41:40,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-08-21 16:41:40,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-21 16:41:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 467. [2020-08-21 16:41:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-08-21 16:41:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 547 transitions. [2020-08-21 16:41:40,317 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 547 transitions. Word has length 90 [2020-08-21 16:41:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:40,317 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 547 transitions. [2020-08-21 16:41:40,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:41:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 547 transitions. [2020-08-21 16:41:40,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:41:40,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:40,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:40,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:41:40,321 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:40,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:40,321 INFO L82 PathProgramCache]: Analyzing trace with hash -286163907, now seen corresponding path program 1 times [2020-08-21 16:41:40,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:40,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615014996] [2020-08-21 16:41:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:40,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615014996] [2020-08-21 16:41:40,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:40,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:41:40,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790670576] [2020-08-21 16:41:40,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:41:40,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:40,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:41:40,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:41:40,460 INFO L87 Difference]: Start difference. First operand 467 states and 547 transitions. Second operand 7 states. [2020-08-21 16:41:41,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:41,987 INFO L93 Difference]: Finished difference Result 1503 states and 1877 transitions. [2020-08-21 16:41:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:41:41,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-21 16:41:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:41,996 INFO L225 Difference]: With dead ends: 1503 [2020-08-21 16:41:41,996 INFO L226 Difference]: Without dead ends: 1058 [2020-08-21 16:41:41,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:41:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-08-21 16:41:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 847. [2020-08-21 16:41:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-21 16:41:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1018 transitions. [2020-08-21 16:41:42,067 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1018 transitions. Word has length 90 [2020-08-21 16:41:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:42,067 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1018 transitions. [2020-08-21 16:41:42,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:41:42,068 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1018 transitions. [2020-08-21 16:41:42,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 16:41:42,069 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:42,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:42,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:41:42,070 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:42,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1417763379, now seen corresponding path program 1 times [2020-08-21 16:41:42,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:42,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795835090] [2020-08-21 16:41:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:41:42,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795835090] [2020-08-21 16:41:42,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:42,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:41:42,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489967833] [2020-08-21 16:41:42,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:41:42,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:42,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:41:42,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:41:42,198 INFO L87 Difference]: Start difference. First operand 847 states and 1018 transitions. Second operand 7 states. [2020-08-21 16:41:43,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:43,742 INFO L93 Difference]: Finished difference Result 2813 states and 3701 transitions. [2020-08-21 16:41:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:41:43,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-08-21 16:41:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:43,755 INFO L225 Difference]: With dead ends: 2813 [2020-08-21 16:41:43,755 INFO L226 Difference]: Without dead ends: 1993 [2020-08-21 16:41:43,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:41:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-08-21 16:41:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1710. [2020-08-21 16:41:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1710 states. [2020-08-21 16:41:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2141 transitions. [2020-08-21 16:41:43,922 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2141 transitions. Word has length 91 [2020-08-21 16:41:43,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:43,922 INFO L479 AbstractCegarLoop]: Abstraction has 1710 states and 2141 transitions. [2020-08-21 16:41:43,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:41:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2141 transitions. [2020-08-21 16:41:43,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-21 16:41:43,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:43,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:43,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:41:43,925 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:43,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:43,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1387972843, now seen corresponding path program 1 times [2020-08-21 16:41:43,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:43,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072562204] [2020-08-21 16:41:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:43,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:43,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 16:41:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:41:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 16:41:44,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072562204] [2020-08-21 16:41:44,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:44,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:41:44,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850043960] [2020-08-21 16:41:44,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:41:44,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:44,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:41:44,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:41:44,076 INFO L87 Difference]: Start difference. First operand 1710 states and 2141 transitions. Second operand 9 states. [2020-08-21 16:41:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:45,418 INFO L93 Difference]: Finished difference Result 3845 states and 5084 transitions. [2020-08-21 16:41:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:41:45,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-08-21 16:41:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:45,432 INFO L225 Difference]: With dead ends: 3845 [2020-08-21 16:41:45,432 INFO L226 Difference]: Without dead ends: 2157 [2020-08-21 16:41:45,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-08-21 16:41:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-08-21 16:41:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1767. [2020-08-21 16:41:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-08-21 16:41:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2232 transitions. [2020-08-21 16:41:45,646 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2232 transitions. Word has length 111 [2020-08-21 16:41:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:45,647 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 2232 transitions. [2020-08-21 16:41:45,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:41:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2232 transitions. [2020-08-21 16:41:45,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-21 16:41:45,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:45,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:45,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:41:45,651 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:45,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash 36587625, now seen corresponding path program 1 times [2020-08-21 16:41:45,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:45,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695549916] [2020-08-21 16:41:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 16:41:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:41:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 16:41:45,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695549916] [2020-08-21 16:41:45,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:45,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:41:45,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910357999] [2020-08-21 16:41:45,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:41:45,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:45,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:41:45,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:41:45,832 INFO L87 Difference]: Start difference. First operand 1767 states and 2232 transitions. Second operand 8 states. [2020-08-21 16:41:47,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:47,835 INFO L93 Difference]: Finished difference Result 5835 states and 7942 transitions. [2020-08-21 16:41:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:41:47,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-08-21 16:41:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:47,855 INFO L225 Difference]: With dead ends: 5835 [2020-08-21 16:41:47,855 INFO L226 Difference]: Without dead ends: 3120 [2020-08-21 16:41:47,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:41:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-08-21 16:41:48,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2788. [2020-08-21 16:41:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2020-08-21 16:41:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3646 transitions. [2020-08-21 16:41:48,197 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3646 transitions. Word has length 111 [2020-08-21 16:41:48,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:48,198 INFO L479 AbstractCegarLoop]: Abstraction has 2788 states and 3646 transitions. [2020-08-21 16:41:48,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:41:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3646 transitions. [2020-08-21 16:41:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 16:41:48,204 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:48,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:48,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 16:41:48,204 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:48,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1178118941, now seen corresponding path program 1 times [2020-08-21 16:41:48,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:48,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736079941] [2020-08-21 16:41:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 16:41:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:41:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 16:41:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:41:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-08-21 16:41:48,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736079941] [2020-08-21 16:41:48,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:48,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:41:48,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15658165] [2020-08-21 16:41:48,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:41:48,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:48,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:41:48,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:41:48,420 INFO L87 Difference]: Start difference. First operand 2788 states and 3646 transitions. Second operand 9 states. [2020-08-21 16:41:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:51,551 INFO L93 Difference]: Finished difference Result 8089 states and 11637 transitions. [2020-08-21 16:41:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:41:51,552 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2020-08-21 16:41:51,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:51,597 INFO L225 Difference]: With dead ends: 8089 [2020-08-21 16:41:51,597 INFO L226 Difference]: Without dead ends: 5323 [2020-08-21 16:41:51,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-08-21 16:41:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-08-21 16:41:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 4852. [2020-08-21 16:41:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4852 states. [2020-08-21 16:41:52,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6633 transitions. [2020-08-21 16:41:52,519 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6633 transitions. Word has length 155 [2020-08-21 16:41:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:52,520 INFO L479 AbstractCegarLoop]: Abstraction has 4852 states and 6633 transitions. [2020-08-21 16:41:52,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:41:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6633 transitions. [2020-08-21 16:41:52,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 16:41:52,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:52,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:52,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 16:41:52,529 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash -390866386, now seen corresponding path program 1 times [2020-08-21 16:41:52,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:52,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849395415] [2020-08-21 16:41:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 16:41:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:41:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 16:41:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:41:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-08-21 16:41:52,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849395415] [2020-08-21 16:41:52,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:52,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:41:52,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579306837] [2020-08-21 16:41:52,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:41:52,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:52,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:41:52,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:41:52,889 INFO L87 Difference]: Start difference. First operand 4852 states and 6633 transitions. Second operand 10 states. [2020-08-21 16:41:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:41:56,270 INFO L93 Difference]: Finished difference Result 12975 states and 19533 transitions. [2020-08-21 16:41:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 16:41:56,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-21 16:41:56,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:41:56,312 INFO L225 Difference]: With dead ends: 12975 [2020-08-21 16:41:56,313 INFO L226 Difference]: Without dead ends: 6726 [2020-08-21 16:41:56,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-08-21 16:41:56,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-08-21 16:41:57,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6174. [2020-08-21 16:41:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-08-21 16:41:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 8297 transitions. [2020-08-21 16:41:57,103 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 8297 transitions. Word has length 156 [2020-08-21 16:41:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:41:57,103 INFO L479 AbstractCegarLoop]: Abstraction has 6174 states and 8297 transitions. [2020-08-21 16:41:57,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:41:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 8297 transitions. [2020-08-21 16:41:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-21 16:41:57,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:41:57,113 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:41:57,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 16:41:57,113 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:41:57,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:41:57,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1382123670, now seen corresponding path program 1 times [2020-08-21 16:41:57,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:41:57,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498911999] [2020-08-21 16:41:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:41:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:41:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:41:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:41:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:41:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:41:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:41:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:41:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 16:41:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:41:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 16:41:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 16:41:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:41:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:41:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-21 16:41:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:41:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:41:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:41:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:41:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 16:41:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:41:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-21 16:41:57,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498911999] [2020-08-21 16:41:57,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:41:57,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 16:41:57,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018354190] [2020-08-21 16:41:57,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:41:57,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:41:57,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:41:57,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:41:57,477 INFO L87 Difference]: Start difference. First operand 6174 states and 8297 transitions. Second operand 11 states. [2020-08-21 16:42:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:42:00,075 INFO L93 Difference]: Finished difference Result 12270 states and 16979 transitions. [2020-08-21 16:42:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 16:42:00,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 207 [2020-08-21 16:42:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:42:00,092 INFO L225 Difference]: With dead ends: 12270 [2020-08-21 16:42:00,092 INFO L226 Difference]: Without dead ends: 3143 [2020-08-21 16:42:00,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2020-08-21 16:42:00,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-08-21 16:42:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2950. [2020-08-21 16:42:00,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2950 states. [2020-08-21 16:42:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3443 transitions. [2020-08-21 16:42:00,339 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3443 transitions. Word has length 207 [2020-08-21 16:42:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:42:00,340 INFO L479 AbstractCegarLoop]: Abstraction has 2950 states and 3443 transitions. [2020-08-21 16:42:00,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:42:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3443 transitions. [2020-08-21 16:42:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-08-21 16:42:00,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:42:00,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:42:00,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 16:42:00,346 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:42:00,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:42:00,346 INFO L82 PathProgramCache]: Analyzing trace with hash 89354437, now seen corresponding path program 1 times [2020-08-21 16:42:00,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:42:00,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471151270] [2020-08-21 16:42:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:42:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:42:00,375 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:42:00,375 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:42:00,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 16:42:00,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:42:00 BoogieIcfgContainer [2020-08-21 16:42:00,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:42:00,425 INFO L168 Benchmark]: Toolchain (without parser) took 38209.42 ms. Allocated memory was 141.0 MB in the beginning and 723.0 MB in the end (delta: 582.0 MB). Free memory was 103.7 MB in the beginning and 362.4 MB in the end (delta: -258.8 MB). Peak memory consumption was 323.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:42:00,425 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:42:00,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.68 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 183.0 MB in the end (delta: -79.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:42:00,427 INFO L168 Benchmark]: Boogie Preprocessor took 54.15 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 180.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:42:00,427 INFO L168 Benchmark]: RCFGBuilder took 564.32 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 144.3 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:42:00,428 INFO L168 Benchmark]: TraceAbstraction took 37165.38 ms. Allocated memory was 204.5 MB in the beginning and 723.0 MB in the end (delta: 518.5 MB). Free memory was 143.7 MB in the beginning and 362.4 MB in the end (delta: -218.8 MB). Peak memory consumption was 299.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:42:00,430 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 420.68 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 183.0 MB in the end (delta: -79.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.15 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 180.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 564.32 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 144.3 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37165.38 ms. Allocated memory was 204.5 MB in the beginning and 723.0 MB in the end (delta: 518.5 MB). Free memory was 143.7 MB in the beginning and 362.4 MB in the end (delta: -218.8 MB). Peak memory consumption was 299.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int t2_pc = 0; [L18] int m_st ; [L19] int t1_st ; [L20] int t2_st ; [L21] int m_i ; [L22] int t1_i ; [L23] int t2_i ; [L24] int M_E = 2; [L25] int T1_E = 2; [L26] int T2_E = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L563] int __retres1 ; [L567] CALL init_model() [L477] m_i = 1 [L478] t1_i = 1 [L479] t2_i = 1 [L567] RET init_model() [L568] CALL start_simulation() [L504] int kernel_st ; [L505] int tmp ; [L506] int tmp___0 ; [L510] kernel_st = 0 [L511] FCALL update_channels() [L512] CALL init_threads() [L211] COND TRUE m_i == 1 [L212] m_st = 0 [L216] COND TRUE t1_i == 1 [L217] t1_st = 0 [L221] COND TRUE t2_i == 1 [L222] t2_st = 0 [L512] RET init_threads() [L513] CALL fire_delta_events() [L324] COND FALSE !(M_E == 0) [L329] COND FALSE !(T1_E == 0) [L334] COND FALSE !(T2_E == 0) [L339] COND FALSE !(E_1 == 0) [L344] COND FALSE !(E_2 == 0) [L513] RET fire_delta_events() [L514] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND FALSE !(t1_pc == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND FALSE !(t2_pc == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L514] RET activate_threads() [L515] CALL reset_delta_events() [L357] COND FALSE !(M_E == 1) [L362] COND FALSE !(T1_E == 1) [L367] COND FALSE !(T2_E == 1) [L372] COND FALSE !(E_1 == 1) [L377] COND FALSE !(E_2 == 1) [L515] RET reset_delta_events() [L518] COND TRUE 1 [L521] kernel_st = 1 [L522] CALL eval() [L257] int tmp ; [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND FALSE !(\read(tmp_ndt_1)) [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND TRUE t1_pc == 0 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND TRUE t2_pc == 0 [L124] COND TRUE 1 [L126] t2_pc = 1 [L127] t2_st = 2 [L305] RET transmit2() [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp_ndt_1) [L276] m_st = 1 [L277] CALL master() [L37] COND TRUE m_pc == 0 [L48] COND TRUE 1 [L51] E_1 = 1 [L52] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND TRUE E_1 == 1 [L167] __retres1 = 1 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND TRUE \read(tmp___0) [L404] t1_st = 0 [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND FALSE !(E_2 == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L425] RET activate_threads() [L52] RET immediate_notify() [L53] E_1 = 2 [L56] COND TRUE 1 [L58] m_pc = 1 [L59] m_st = 2 [L277] RET master() [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND FALSE !(t1_pc == 0) [L81] COND TRUE t1_pc == 1 [L97] E_2 = 1 [L98] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND TRUE m_pc == 1 [L147] COND FALSE !(M_E == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND FALSE !(E_1 == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND TRUE E_2 == 1 [L186] __retres1 = 1 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND TRUE \read(tmp___1) [L412] t2_st = 0 [L425] RET activate_threads() [L98] RET immediate_notify() [L99] E_2 = 2 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND FALSE !(t2_pc == 0) [L116] COND TRUE t2_pc == 1 [L132] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.0s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 29.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2606 SDtfs, 11528 SDslu, 735 SDs, 0 SdLazy, 15842 SolverSat, 5833 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6174occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 3916 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1939 NumberOfCodeBlocks, 1939 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1715 ConstructedInterpolants, 0 QuantifiedInterpolants, 487945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 237/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...