/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/pc_sfifo_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:45:22,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:45:22,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:45:22,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:45:22,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:45:22,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:45:22,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:45:22,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:45:22,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:45:22,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:45:22,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:45:22,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:45:22,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:45:22,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:45:22,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:45:22,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:45:22,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:45:22,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:45:22,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:45:22,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:45:22,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:45:22,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:45:22,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:45:22,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:45:22,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:45:22,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:45:22,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:45:22,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:45:22,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:45:22,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:45:22,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:45:22,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:45:22,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:45:22,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:45:22,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:45:22,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:45:22,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:45:22,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:45:22,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:45:22,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:45:22,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:45:22,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 00:45:22,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:45:22,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:45:22,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:45:22,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:45:22,190 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:45:22,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:45:22,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:45:22,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:45:22,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:45:22,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:45:22,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:45:22,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:45:22,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:45:22,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:45:22,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:45:22,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:45:22,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:45:22,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:45:22,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:45:22,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:45:22,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:45:22,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:45:22,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:45:22,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:45:22,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:45:22,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:45:22,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:45:22,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:45:22,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:45:22,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:45:22,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:45:22,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:45:22,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:45:22,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:45:22,495 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:45:22,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-08-22 00:45:22,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16f145343/45ecad564efa4305a3de71dbe8f20ca2/FLAG6323ae64e [2020-08-22 00:45:23,040 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:45:23,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-08-22 00:45:23,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16f145343/45ecad564efa4305a3de71dbe8f20ca2/FLAG6323ae64e [2020-08-22 00:45:23,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16f145343/45ecad564efa4305a3de71dbe8f20ca2 [2020-08-22 00:45:23,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:45:23,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:45:23,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:45:23,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:45:23,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:45:23,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:45:23" (1/1) ... [2020-08-22 00:45:23,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fa96a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23, skipping insertion in model container [2020-08-22 00:45:23,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:45:23" (1/1) ... [2020-08-22 00:45:23,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:45:23,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:45:23,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:45:23,684 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:45:23,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:45:23,736 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:45:23,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23 WrapperNode [2020-08-22 00:45:23,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:45:23,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:45:23,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:45:23,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:45:23,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23" (1/1) ... [2020-08-22 00:45:23,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23" (1/1) ... [2020-08-22 00:45:23,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23" (1/1) ... [2020-08-22 00:45:23,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23" (1/1) ... [2020-08-22 00:45:23,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23" (1/1) ... [2020-08-22 00:45:23,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23" (1/1) ... [2020-08-22 00:45:23,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23" (1/1) ... [2020-08-22 00:45:23,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:45:23,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:45:23,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:45:23,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:45:23,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:45:23,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:45:23,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:45:23,935 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 00:45:23,936 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-08-22 00:45:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-08-22 00:45:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-08-22 00:45:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-08-22 00:45:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-08-22 00:45:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 00:45:23,938 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 00:45:23,938 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 00:45:23,938 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 00:45:23,938 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 00:45:23,939 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 00:45:23,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:45:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:45:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:45:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 00:45:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-08-22 00:45:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-08-22 00:45:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-08-22 00:45:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-08-22 00:45:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-08-22 00:45:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 00:45:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 00:45:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 00:45:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 00:45:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 00:45:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 00:45:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:45:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:45:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:45:24,452 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:45:24,453 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 00:45:24,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:45:24 BoogieIcfgContainer [2020-08-22 00:45:24,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:45:24,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:45:24,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:45:24,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:45:24,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:45:23" (1/3) ... [2020-08-22 00:45:24,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3d5c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:45:24, skipping insertion in model container [2020-08-22 00:45:24,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:45:23" (2/3) ... [2020-08-22 00:45:24,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3d5c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:45:24, skipping insertion in model container [2020-08-22 00:45:24,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:45:24" (3/3) ... [2020-08-22 00:45:24,466 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2020-08-22 00:45:24,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:45:24,490 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:45:24,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:45:24,530 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:45:24,531 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:45:24,531 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:45:24,531 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:45:24,531 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:45:24,531 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:45:24,531 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:45:24,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:45:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-08-22 00:45:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 00:45:24,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:24,562 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] [2020-08-22 00:45:24,562 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:24,569 INFO L82 PathProgramCache]: Analyzing trace with hash 800633075, now seen corresponding path program 1 times [2020-08-22 00:45:24,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:24,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552516983] [2020-08-22 00:45:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:25,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:45:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:25,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:25,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:25,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552516983] [2020-08-22 00:45:25,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:25,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:45:25,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633027550] [2020-08-22 00:45:25,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:45:25,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:25,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:45:25,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:45:25,115 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 6 states. [2020-08-22 00:45:26,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:26,334 INFO L93 Difference]: Finished difference Result 356 states and 554 transitions. [2020-08-22 00:45:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:45:26,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-22 00:45:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:26,353 INFO L225 Difference]: With dead ends: 356 [2020-08-22 00:45:26,354 INFO L226 Difference]: Without dead ends: 248 [2020-08-22 00:45:26,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:45:26,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-22 00:45:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 185. [2020-08-22 00:45:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-22 00:45:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 246 transitions. [2020-08-22 00:45:26,454 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 246 transitions. Word has length 65 [2020-08-22 00:45:26,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:26,455 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 246 transitions. [2020-08-22 00:45:26,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:45:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 246 transitions. [2020-08-22 00:45:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 00:45:26,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:26,461 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] [2020-08-22 00:45:26,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:45:26,462 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:26,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1537976919, now seen corresponding path program 1 times [2020-08-22 00:45:26,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:26,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786800845] [2020-08-22 00:45:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:26,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:26,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:26,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:45:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:26,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786800845] [2020-08-22 00:45:26,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:26,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 00:45:26,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424817353] [2020-08-22 00:45:26,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:45:26,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:26,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:45:26,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:45:26,735 INFO L87 Difference]: Start difference. First operand 185 states and 246 transitions. Second operand 7 states. [2020-08-22 00:45:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:27,397 INFO L93 Difference]: Finished difference Result 406 states and 562 transitions. [2020-08-22 00:45:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:45:27,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-08-22 00:45:27,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:27,407 INFO L225 Difference]: With dead ends: 406 [2020-08-22 00:45:27,407 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 00:45:27,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:45:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 00:45:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 182. [2020-08-22 00:45:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-22 00:45:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 241 transitions. [2020-08-22 00:45:27,451 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 241 transitions. Word has length 66 [2020-08-22 00:45:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:27,452 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 241 transitions. [2020-08-22 00:45:27,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:45:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 241 transitions. [2020-08-22 00:45:27,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 00:45:27,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:27,455 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] [2020-08-22 00:45:27,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:45:27,455 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:27,456 INFO L82 PathProgramCache]: Analyzing trace with hash -478173211, now seen corresponding path program 1 times [2020-08-22 00:45:27,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:27,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849418029] [2020-08-22 00:45:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:27,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:27,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:45:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:27,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 00:45:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:27,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:27,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849418029] [2020-08-22 00:45:27,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:27,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:45:27,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810254627] [2020-08-22 00:45:27,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:45:27,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:27,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:45:27,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:45:27,762 INFO L87 Difference]: Start difference. First operand 182 states and 241 transitions. Second operand 9 states. [2020-08-22 00:45:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:29,016 INFO L93 Difference]: Finished difference Result 582 states and 869 transitions. [2020-08-22 00:45:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 00:45:29,017 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-08-22 00:45:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:29,022 INFO L225 Difference]: With dead ends: 582 [2020-08-22 00:45:29,023 INFO L226 Difference]: Without dead ends: 417 [2020-08-22 00:45:29,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:45:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-22 00:45:29,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 336. [2020-08-22 00:45:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-08-22 00:45:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 490 transitions. [2020-08-22 00:45:29,117 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 490 transitions. Word has length 72 [2020-08-22 00:45:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:29,119 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 490 transitions. [2020-08-22 00:45:29,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:45:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 490 transitions. [2020-08-22 00:45:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 00:45:29,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:29,124 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] [2020-08-22 00:45:29,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:45:29,124 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:29,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2098500188, now seen corresponding path program 1 times [2020-08-22 00:45:29,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:29,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548880747] [2020-08-22 00:45:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:29,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:29,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:45:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:29,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:45:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:29,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:29,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:29,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548880747] [2020-08-22 00:45:29,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:29,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:45:29,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184973053] [2020-08-22 00:45:29,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:45:29,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:29,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:45:29,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:45:29,455 INFO L87 Difference]: Start difference. First operand 336 states and 490 transitions. Second operand 12 states. [2020-08-22 00:45:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:32,415 INFO L93 Difference]: Finished difference Result 873 states and 1358 transitions. [2020-08-22 00:45:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 00:45:32,418 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-22 00:45:32,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:32,426 INFO L225 Difference]: With dead ends: 873 [2020-08-22 00:45:32,426 INFO L226 Difference]: Without dead ends: 554 [2020-08-22 00:45:32,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 00:45:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-08-22 00:45:32,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 211. [2020-08-22 00:45:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-22 00:45:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-08-22 00:45:32,502 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 73 [2020-08-22 00:45:32,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:32,503 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-08-22 00:45:32,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:45:32,504 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-08-22 00:45:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 00:45:32,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:32,507 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] [2020-08-22 00:45:32,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:45:32,516 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:32,520 INFO L82 PathProgramCache]: Analyzing trace with hash -708931582, now seen corresponding path program 1 times [2020-08-22 00:45:32,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:32,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288825884] [2020-08-22 00:45:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:32,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:32,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:32,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:45:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:32,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:32,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:32,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288825884] [2020-08-22 00:45:32,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:32,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:45:32,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220643542] [2020-08-22 00:45:32,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:45:32,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:32,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:45:32,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:45:32,747 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 8 states. [2020-08-22 00:45:33,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:33,855 INFO L93 Difference]: Finished difference Result 612 states and 874 transitions. [2020-08-22 00:45:33,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:45:33,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-22 00:45:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:33,859 INFO L225 Difference]: With dead ends: 612 [2020-08-22 00:45:33,860 INFO L226 Difference]: Without dead ends: 418 [2020-08-22 00:45:33,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:45:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-22 00:45:33,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 323. [2020-08-22 00:45:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-22 00:45:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 419 transitions. [2020-08-22 00:45:33,908 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 419 transitions. Word has length 66 [2020-08-22 00:45:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:33,909 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 419 transitions. [2020-08-22 00:45:33,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:45:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 419 transitions. [2020-08-22 00:45:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 00:45:33,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:33,911 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] [2020-08-22 00:45:33,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:45:33,911 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:33,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:33,912 INFO L82 PathProgramCache]: Analyzing trace with hash -822318239, now seen corresponding path program 1 times [2020-08-22 00:45:33,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:33,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786199216] [2020-08-22 00:45:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:33,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:34,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:34,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:34,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:34,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:45:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:34,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:34,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:34,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786199216] [2020-08-22 00:45:34,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:34,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:45:34,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637319545] [2020-08-22 00:45:34,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:45:34,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:34,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:45:34,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:45:34,108 INFO L87 Difference]: Start difference. First operand 323 states and 419 transitions. Second operand 9 states. [2020-08-22 00:45:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:35,029 INFO L93 Difference]: Finished difference Result 727 states and 1002 transitions. [2020-08-22 00:45:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:45:35,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-22 00:45:35,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:35,037 INFO L225 Difference]: With dead ends: 727 [2020-08-22 00:45:35,037 INFO L226 Difference]: Without dead ends: 421 [2020-08-22 00:45:35,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:45:35,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-22 00:45:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 341. [2020-08-22 00:45:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-22 00:45:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 437 transitions. [2020-08-22 00:45:35,093 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 437 transitions. Word has length 66 [2020-08-22 00:45:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:35,094 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 437 transitions. [2020-08-22 00:45:35,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:45:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 437 transitions. [2020-08-22 00:45:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 00:45:35,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:35,096 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] [2020-08-22 00:45:35,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:45:35,097 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:35,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1843386593, now seen corresponding path program 1 times [2020-08-22 00:45:35,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:35,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828949201] [2020-08-22 00:45:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:35,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:35,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:35,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:35,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:35,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:45:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:35,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:35,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828949201] [2020-08-22 00:45:35,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:35,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:45:35,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010685494] [2020-08-22 00:45:35,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:45:35,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:45:35,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:45:35,342 INFO L87 Difference]: Start difference. First operand 341 states and 437 transitions. Second operand 9 states. [2020-08-22 00:45:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:37,792 INFO L93 Difference]: Finished difference Result 1164 states and 1617 transitions. [2020-08-22 00:45:37,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 00:45:37,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-22 00:45:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:37,799 INFO L225 Difference]: With dead ends: 1164 [2020-08-22 00:45:37,799 INFO L226 Difference]: Without dead ends: 840 [2020-08-22 00:45:37,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2020-08-22 00:45:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-08-22 00:45:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 643. [2020-08-22 00:45:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-08-22 00:45:37,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 815 transitions. [2020-08-22 00:45:37,886 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 815 transitions. Word has length 66 [2020-08-22 00:45:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:37,887 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 815 transitions. [2020-08-22 00:45:37,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:45:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 815 transitions. [2020-08-22 00:45:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 00:45:37,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:37,888 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] [2020-08-22 00:45:37,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:45:37,889 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:37,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1172255968, now seen corresponding path program 1 times [2020-08-22 00:45:37,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:37,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634597417] [2020-08-22 00:45:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:45:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:38,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634597417] [2020-08-22 00:45:38,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:38,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:45:38,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75332141] [2020-08-22 00:45:38,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:45:38,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:38,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:45:38,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:45:38,083 INFO L87 Difference]: Start difference. First operand 643 states and 815 transitions. Second operand 9 states. [2020-08-22 00:45:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:38,927 INFO L93 Difference]: Finished difference Result 1352 states and 1804 transitions. [2020-08-22 00:45:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:45:38,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-22 00:45:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:38,934 INFO L225 Difference]: With dead ends: 1352 [2020-08-22 00:45:38,934 INFO L226 Difference]: Without dead ends: 764 [2020-08-22 00:45:38,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-08-22 00:45:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-08-22 00:45:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 669. [2020-08-22 00:45:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-08-22 00:45:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 834 transitions. [2020-08-22 00:45:39,006 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 834 transitions. Word has length 66 [2020-08-22 00:45:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:39,006 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 834 transitions. [2020-08-22 00:45:39,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:45:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 834 transitions. [2020-08-22 00:45:39,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 00:45:39,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:39,009 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] [2020-08-22 00:45:39,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:45:39,009 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:39,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:39,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1347703966, now seen corresponding path program 1 times [2020-08-22 00:45:39,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:39,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782112002] [2020-08-22 00:45:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:45:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:45:39,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782112002] [2020-08-22 00:45:39,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:39,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:45:39,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275255092] [2020-08-22 00:45:39,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:45:39,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:39,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:45:39,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:45:39,170 INFO L87 Difference]: Start difference. First operand 669 states and 834 transitions. Second operand 6 states. [2020-08-22 00:45:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:39,837 INFO L93 Difference]: Finished difference Result 1262 states and 1648 transitions. [2020-08-22 00:45:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:45:39,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-22 00:45:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:39,843 INFO L225 Difference]: With dead ends: 1262 [2020-08-22 00:45:39,843 INFO L226 Difference]: Without dead ends: 814 [2020-08-22 00:45:39,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:45:39,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-22 00:45:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 708. [2020-08-22 00:45:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-08-22 00:45:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 908 transitions. [2020-08-22 00:45:39,922 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 908 transitions. Word has length 66 [2020-08-22 00:45:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:39,922 INFO L479 AbstractCegarLoop]: Abstraction has 708 states and 908 transitions. [2020-08-22 00:45:39,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:45:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 908 transitions. [2020-08-22 00:45:39,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-22 00:45:39,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:39,925 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] [2020-08-22 00:45:39,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:45:39,925 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:39,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:39,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1757954899, now seen corresponding path program 1 times [2020-08-22 00:45:39,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:39,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386239766] [2020-08-22 00:45:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:45:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:45:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 00:45:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 00:45:40,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386239766] [2020-08-22 00:45:40,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:45:40,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:45:40,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709971192] [2020-08-22 00:45:40,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:45:40,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:40,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:45:40,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:45:40,110 INFO L87 Difference]: Start difference. First operand 708 states and 908 transitions. Second operand 10 states. [2020-08-22 00:45:42,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:42,726 INFO L93 Difference]: Finished difference Result 2276 states and 3104 transitions. [2020-08-22 00:45:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-22 00:45:42,729 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-08-22 00:45:42,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:42,738 INFO L225 Difference]: With dead ends: 2276 [2020-08-22 00:45:42,738 INFO L226 Difference]: Without dead ends: 1165 [2020-08-22 00:45:42,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 00:45:42,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-08-22 00:45:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1067. [2020-08-22 00:45:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1067 states. [2020-08-22 00:45:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1396 transitions. [2020-08-22 00:45:42,884 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1396 transitions. Word has length 86 [2020-08-22 00:45:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:42,885 INFO L479 AbstractCegarLoop]: Abstraction has 1067 states and 1396 transitions. [2020-08-22 00:45:42,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:45:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1396 transitions. [2020-08-22 00:45:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 00:45:42,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:42,889 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 00:45:42,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:45:42,889 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:42,889 INFO L82 PathProgramCache]: Analyzing trace with hash -232030383, now seen corresponding path program 1 times [2020-08-22 00:45:42,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:42,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112952539] [2020-08-22 00:45:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:42,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:45:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 00:45:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 00:45:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-22 00:45:43,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112952539] [2020-08-22 00:45:43,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:43,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:45:43,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106248108] [2020-08-22 00:45:43,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:45:43,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:43,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:45:43,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:45:43,086 INFO L87 Difference]: Start difference. First operand 1067 states and 1396 transitions. Second operand 8 states. [2020-08-22 00:45:43,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:43,915 INFO L93 Difference]: Finished difference Result 1198 states and 1596 transitions. [2020-08-22 00:45:43,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:45:43,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-22 00:45:43,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:43,925 INFO L225 Difference]: With dead ends: 1198 [2020-08-22 00:45:43,925 INFO L226 Difference]: Without dead ends: 1195 [2020-08-22 00:45:43,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-22 00:45:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-08-22 00:45:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1066. [2020-08-22 00:45:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-08-22 00:45:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1375 transitions. [2020-08-22 00:45:44,033 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1375 transitions. Word has length 98 [2020-08-22 00:45:44,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:44,034 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1375 transitions. [2020-08-22 00:45:44,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:45:44,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1375 transitions. [2020-08-22 00:45:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 00:45:44,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:44,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:45:44,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:45:44,037 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:44,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:44,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1396688396, now seen corresponding path program 1 times [2020-08-22 00:45:44,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:44,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804260489] [2020-08-22 00:45:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:45:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 00:45:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 00:45:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-22 00:45:44,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804260489] [2020-08-22 00:45:44,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:45:44,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:45:44,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006683151] [2020-08-22 00:45:44,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:45:44,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:44,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:45:44,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:45:44,321 INFO L87 Difference]: Start difference. First operand 1066 states and 1375 transitions. Second operand 10 states. [2020-08-22 00:45:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:46,328 INFO L93 Difference]: Finished difference Result 2245 states and 3689 transitions. [2020-08-22 00:45:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 00:45:46,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-08-22 00:45:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:46,345 INFO L225 Difference]: With dead ends: 2245 [2020-08-22 00:45:46,346 INFO L226 Difference]: Without dead ends: 2242 [2020-08-22 00:45:46,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2020-08-22 00:45:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2020-08-22 00:45:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2065. [2020-08-22 00:45:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-08-22 00:45:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 3155 transitions. [2020-08-22 00:45:46,621 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 3155 transitions. Word has length 99 [2020-08-22 00:45:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:46,621 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 3155 transitions. [2020-08-22 00:45:46,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:45:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 3155 transitions. [2020-08-22 00:45:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-08-22 00:45:46,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:46,628 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:45:46,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:45:46,629 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:46,629 INFO L82 PathProgramCache]: Analyzing trace with hash 83738947, now seen corresponding path program 2 times [2020-08-22 00:45:46,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:46,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814879980] [2020-08-22 00:45:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:45:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 00:45:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:45:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 00:45:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-08-22 00:45:46,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814879980] [2020-08-22 00:45:46,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:45:46,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 00:45:46,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314223007] [2020-08-22 00:45:46,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:45:46,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:46,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:45:46,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:45:46,805 INFO L87 Difference]: Start difference. First operand 2065 states and 3155 transitions. Second operand 7 states. [2020-08-22 00:45:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:47,602 INFO L93 Difference]: Finished difference Result 3453 states and 5580 transitions. [2020-08-22 00:45:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:45:47,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-08-22 00:45:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:47,616 INFO L225 Difference]: With dead ends: 3453 [2020-08-22 00:45:47,616 INFO L226 Difference]: Without dead ends: 1708 [2020-08-22 00:45:47,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:45:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2020-08-22 00:45:47,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1578. [2020-08-22 00:45:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-08-22 00:45:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2390 transitions. [2020-08-22 00:45:47,811 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2390 transitions. Word has length 125 [2020-08-22 00:45:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:47,812 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 2390 transitions. [2020-08-22 00:45:47,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:45:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2390 transitions. [2020-08-22 00:45:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 00:45:47,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:45:47,820 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:45:47,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 00:45:47,820 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:45:47,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:45:47,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1612542371, now seen corresponding path program 1 times [2020-08-22 00:45:47,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:45:47,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244283525] [2020-08-22 00:45:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:45:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:45:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:45:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:47,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:45:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:47,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:45:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:47,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:45:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 00:45:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:47,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 00:45:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:48,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 00:45:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:48,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 00:45:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:48,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:48,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 00:45:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:45:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:45:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:45:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-22 00:45:48,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244283525] [2020-08-22 00:45:48,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:45:48,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 00:45:48,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571607368] [2020-08-22 00:45:48,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:45:48,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:45:48,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:45:48,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:45:48,069 INFO L87 Difference]: Start difference. First operand 1578 states and 2390 transitions. Second operand 11 states. [2020-08-22 00:45:49,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:45:49,612 INFO L93 Difference]: Finished difference Result 1974 states and 3024 transitions. [2020-08-22 00:45:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 00:45:49,614 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-22 00:45:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:45:49,615 INFO L225 Difference]: With dead ends: 1974 [2020-08-22 00:45:49,616 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:45:49,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-08-22 00:45:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:45:49,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:45:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:45:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:45:49,630 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2020-08-22 00:45:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:45:49,630 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:45:49,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:45:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:45:49,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:45:49,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 00:45:49,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:45:50,292 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 118 [2020-08-22 00:45:52,202 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 112 [2020-08-22 00:45:57,027 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2020-08-22 00:45:58,223 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 1 [2020-08-22 00:45:59,286 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 138 DAG size of output: 98 [2020-08-22 00:46:00,433 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 138 DAG size of output: 98 [2020-08-22 00:46:00,702 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2020-08-22 00:46:00,811 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-08-22 00:46:01,795 WARN L193 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 80 [2020-08-22 00:46:01,987 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 1 [2020-08-22 00:46:03,329 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 165 DAG size of output: 76 [2020-08-22 00:46:04,144 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 61 [2020-08-22 00:46:04,987 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2020-08-22 00:46:05,380 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 40 [2020-08-22 00:46:06,479 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 138 DAG size of output: 98 [2020-08-22 00:46:06,623 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2020-08-22 00:46:06,765 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-08-22 00:46:09,959 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 218 DAG size of output: 154 [2020-08-22 00:46:10,129 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-08-22 00:46:10,667 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-08-22 00:46:11,045 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2020-08-22 00:46:11,372 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 1 [2020-08-22 00:46:11,561 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 1 [2020-08-22 00:46:15,867 WARN L193 SmtUtils]: Spent 4.30 s on a formula simplification. DAG size of input: 246 DAG size of output: 160 [2020-08-22 00:46:16,009 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 1 [2020-08-22 00:46:18,104 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 176 DAG size of output: 124 [2020-08-22 00:46:19,273 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 165 DAG size of output: 101