/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:48:51,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:48:51,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:48:51,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:48:51,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:48:51,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:48:51,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:48:51,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:48:51,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:48:51,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:48:51,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:48:51,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:48:51,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:48:51,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:48:51,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:48:51,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:48:51,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:48:51,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:48:51,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:48:51,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:48:51,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:48:51,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:48:51,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:48:51,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:48:51,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:48:51,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:48:51,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:48:51,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:48:51,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:48:51,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:48:51,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:48:51,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:48:51,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:48:51,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:48:51,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:48:51,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:48:51,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:48:51,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:48:51,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:48:51,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:48:51,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:48:51,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:48:51,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:48:51,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:48:51,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:48:51,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:48:51,597 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:48:51,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:48:51,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:48:51,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:48:51,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:48:51,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:48:51,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:48:51,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:48:51,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:48:51,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:48:51,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:48:51,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:48:51,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:48:51,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:48:51,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:48:51,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:48:51,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:48:51,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:48:51,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:48:51,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:48:51,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:48:51,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:48:51,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:48:51,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:48:51,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:48:51,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:48:51,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:48:51,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:48:51,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:48:51,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:48:51,934 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:48:51,935 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-22 04:48:51,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a5d9c86e/c5cf69b3bd2742e2b36dcd7a67bf4aee/FLAG2e6a9441d [2020-08-22 04:48:52,422 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:48:52,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-22 04:48:52,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a5d9c86e/c5cf69b3bd2742e2b36dcd7a67bf4aee/FLAG2e6a9441d [2020-08-22 04:48:52,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a5d9c86e/c5cf69b3bd2742e2b36dcd7a67bf4aee [2020-08-22 04:48:52,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:48:52,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:48:52,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:48:52,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:48:52,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:48:52,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d971ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:52, skipping insertion in model container [2020-08-22 04:48:52,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:48:52" (1/1) ... [2020-08-22 04:48:52,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:48:52,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:48:53,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:48:53,047 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:48:53,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:48:53,186 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:48:53,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53 WrapperNode [2020-08-22 04:48:53,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:48:53,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:48:53,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:48:53,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:48:53,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53" (1/1) ... [2020-08-22 04:48:53,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53" (1/1) ... [2020-08-22 04:48:53,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53" (1/1) ... [2020-08-22 04:48:53,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53" (1/1) ... [2020-08-22 04:48:53,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53" (1/1) ... [2020-08-22 04:48:53,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53" (1/1) ... [2020-08-22 04:48:53,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53" (1/1) ... [2020-08-22 04:48:53,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:48:53,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:48:53,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:48:53,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:48:53,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:48:53,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:48:53,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:48:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 04:48:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 04:48:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 04:48:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 04:48:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 04:48:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 04:48:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 04:48:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 04:48:53,303 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 04:48:53,303 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 04:48:53,303 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 04:48:53,303 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 04:48:53,303 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 04:48:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 04:48:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 04:48:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 04:48:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 04:48:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 04:48:53,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:48:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:48:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:48:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 04:48:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 04:48:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 04:48:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 04:48:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 04:48:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 04:48:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 04:48:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 04:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 04:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 04:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 04:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 04:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 04:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 04:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 04:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 04:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 04:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 04:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:48:53,805 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:48:53,805 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:48:53,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:48:53 BoogieIcfgContainer [2020-08-22 04:48:53,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:48:53,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:48:53,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:48:53,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:48:53,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:48:52" (1/3) ... [2020-08-22 04:48:53,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a726582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:48:53, skipping insertion in model container [2020-08-22 04:48:53,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:48:53" (2/3) ... [2020-08-22 04:48:53,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a726582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:48:53, skipping insertion in model container [2020-08-22 04:48:53,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:48:53" (3/3) ... [2020-08-22 04:48:53,819 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-22 04:48:53,828 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:48:53,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:48:53,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:48:53,875 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:48:53,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:48:53,876 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:48:53,876 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:48:53,876 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:48:53,876 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:48:53,876 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:48:53,877 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:48:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-22 04:48:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 04:48:53,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:48:53,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:48:53,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:48:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:48:53,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-22 04:48:53,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:48:53,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048817057] [2020-08-22 04:48:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:48:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:48:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:48:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:48:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:48:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:48:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:48:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:48:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:48:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:48:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:48:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:48:54,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048817057] [2020-08-22 04:48:54,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:48:54,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:48:54,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127689525] [2020-08-22 04:48:54,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:48:54,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:48:54,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:48:54,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:48:54,483 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-22 04:48:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:48:56,401 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-22 04:48:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:48:56,403 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-22 04:48:56,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:48:56,421 INFO L225 Difference]: With dead ends: 479 [2020-08-22 04:48:56,422 INFO L226 Difference]: Without dead ends: 340 [2020-08-22 04:48:56,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:48:56,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-22 04:48:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-22 04:48:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 04:48:56,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-22 04:48:56,534 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-22 04:48:56,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:48:56,535 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-22 04:48:56,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:48:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-22 04:48:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 04:48:56,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:48:56,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:48:56,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:48:56,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:48:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:48:56,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-22 04:48:56,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:48:56,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637224455] [2020-08-22 04:48:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:48:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:48:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:48:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:48:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:48:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:48:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:48:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:48:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:48:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:48:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:48:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:48:56,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637224455] [2020-08-22 04:48:56,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:48:56,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:48:56,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364535927] [2020-08-22 04:48:56,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:48:56,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:48:56,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:48:56,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:48:56,787 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-22 04:48:57,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:48:57,782 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-22 04:48:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:48:57,785 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-22 04:48:57,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:48:57,793 INFO L225 Difference]: With dead ends: 545 [2020-08-22 04:48:57,793 INFO L226 Difference]: Without dead ends: 331 [2020-08-22 04:48:57,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:48:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-22 04:48:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-22 04:48:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-22 04:48:57,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-22 04:48:57,879 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-22 04:48:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:48:57,879 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-22 04:48:57,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:48:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-22 04:48:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 04:48:57,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:48:57,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:48:57,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:48:57,883 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:48:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:48:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-22 04:48:57,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:48:57,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801197753] [2020-08-22 04:48:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:48:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:48:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:48:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:48:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:48:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:48:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:57,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:48:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:48:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:48:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:48:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:48:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:48:58,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801197753] [2020-08-22 04:48:58,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:48:58,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:48:58,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243182397] [2020-08-22 04:48:58,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:48:58,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:48:58,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:48:58,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:48:58,056 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-22 04:48:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:48:59,395 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-22 04:48:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:48:59,396 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-22 04:48:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:48:59,400 INFO L225 Difference]: With dead ends: 548 [2020-08-22 04:48:59,401 INFO L226 Difference]: Without dead ends: 335 [2020-08-22 04:48:59,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:48:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-22 04:48:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-22 04:48:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-22 04:48:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-22 04:48:59,434 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-22 04:48:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:48:59,435 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-22 04:48:59,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:48:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-22 04:48:59,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 04:48:59,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:48:59,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:48:59,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:48:59,438 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:48:59,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:48:59,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-22 04:48:59,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:48:59,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702742101] [2020-08-22 04:48:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:48:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:48:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:48:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:48:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:48:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:48:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:48:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:48:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:48:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:48:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:48:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:48:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:48:59,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702742101] [2020-08-22 04:48:59,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:48:59,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:48:59,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769107050] [2020-08-22 04:48:59,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:48:59,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:48:59,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:48:59,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:48:59,620 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-22 04:49:01,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:01,311 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-22 04:49:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:49:01,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-22 04:49:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:01,321 INFO L225 Difference]: With dead ends: 848 [2020-08-22 04:49:01,321 INFO L226 Difference]: Without dead ends: 630 [2020-08-22 04:49:01,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:49:01,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-22 04:49:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-22 04:49:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-22 04:49:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-22 04:49:01,391 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-22 04:49:01,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:01,392 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-22 04:49:01,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:49:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-22 04:49:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 04:49:01,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:01,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:01,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:49:01,395 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:01,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:01,395 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-22 04:49:01,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:01,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918381347] [2020-08-22 04:49:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:49:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:49:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:49:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:49:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 04:49:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 04:49:01,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918381347] [2020-08-22 04:49:01,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:49:01,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 04:49:01,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495610118] [2020-08-22 04:49:01,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:49:01,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:01,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:49:01,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:49:01,574 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-22 04:49:03,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:03,046 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-22 04:49:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:49:03,048 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 04:49:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:03,053 INFO L225 Difference]: With dead ends: 1125 [2020-08-22 04:49:03,053 INFO L226 Difference]: Without dead ends: 686 [2020-08-22 04:49:03,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-08-22 04:49:03,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-22 04:49:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-22 04:49:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-22 04:49:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-22 04:49:03,122 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-22 04:49:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:03,123 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-22 04:49:03,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:49:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-22 04:49:03,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 04:49:03,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:03,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:03,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:49:03,129 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:03,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:03,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-22 04:49:03,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:03,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991741949] [2020-08-22 04:49:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:49:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:49:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:49:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:49:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 04:49:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 04:49:03,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991741949] [2020-08-22 04:49:03,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:49:03,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 04:49:03,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414102728] [2020-08-22 04:49:03,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:49:03,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:03,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:49:03,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:49:03,333 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-22 04:49:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:05,024 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-22 04:49:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 04:49:05,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 04:49:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:05,032 INFO L225 Difference]: With dead ends: 1387 [2020-08-22 04:49:05,033 INFO L226 Difference]: Without dead ends: 859 [2020-08-22 04:49:05,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2020-08-22 04:49:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-22 04:49:05,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-22 04:49:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-22 04:49:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-22 04:49:05,112 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-22 04:49:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:05,113 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-22 04:49:05,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:49:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-22 04:49:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 04:49:05,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:05,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:05,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:49:05,120 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:05,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-22 04:49:05,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:05,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197721497] [2020-08-22 04:49:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:49:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:49:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:49:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:49:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 04:49:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 04:49:05,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197721497] [2020-08-22 04:49:05,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:49:05,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 04:49:05,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132330129] [2020-08-22 04:49:05,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:49:05,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:05,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:49:05,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:49:05,266 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-22 04:49:06,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:06,694 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-22 04:49:06,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:49:06,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-22 04:49:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:06,712 INFO L225 Difference]: With dead ends: 1930 [2020-08-22 04:49:06,713 INFO L226 Difference]: Without dead ends: 1304 [2020-08-22 04:49:06,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:49:06,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-22 04:49:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-22 04:49:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-22 04:49:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-22 04:49:06,861 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-22 04:49:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:06,862 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-22 04:49:06,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:49:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-22 04:49:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-22 04:49:06,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:06,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:06,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:49:06,865 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:06,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-22 04:49:06,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:06,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940823153] [2020-08-22 04:49:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:49:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:49:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:49:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:49:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 04:49:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:49:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:49:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:49:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:49:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:49:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 04:49:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 04:49:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:49:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 04:49:07,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940823153] [2020-08-22 04:49:07,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:49:07,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:49:07,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976136855] [2020-08-22 04:49:07,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:49:07,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:49:07,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:49:07,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:49:07,015 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 8 states. [2020-08-22 04:49:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:49:08,558 INFO L93 Difference]: Finished difference Result 3462 states and 4605 transitions. [2020-08-22 04:49:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:49:08,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-22 04:49:08,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:49:08,575 INFO L225 Difference]: With dead ends: 3462 [2020-08-22 04:49:08,575 INFO L226 Difference]: Without dead ends: 1841 [2020-08-22 04:49:08,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:49:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-08-22 04:49:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1489. [2020-08-22 04:49:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-08-22 04:49:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1820 transitions. [2020-08-22 04:49:08,703 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1820 transitions. Word has length 95 [2020-08-22 04:49:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:49:08,703 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1820 transitions. [2020-08-22 04:49:08,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:49:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1820 transitions. [2020-08-22 04:49:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-22 04:49:08,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:49:08,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:49:08,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:49:08,710 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:49:08,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:49:08,710 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-22 04:49:08,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:49:08,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943347125] [2020-08-22 04:49:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:49:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:49:08,740 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:49:08,740 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:49:08,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:49:08,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:49:08 BoogieIcfgContainer [2020-08-22 04:49:08,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:49:08,784 INFO L168 Benchmark]: Toolchain (without parser) took 16011.41 ms. Allocated memory was 138.9 MB in the beginning and 401.6 MB in the end (delta: 262.7 MB). Free memory was 101.9 MB in the beginning and 212.9 MB in the end (delta: -111.0 MB). Peak memory consumption was 151.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:08,785 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 04:49:08,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.64 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 180.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:08,787 INFO L168 Benchmark]: Boogie Preprocessor took 43.37 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:08,788 INFO L168 Benchmark]: RCFGBuilder took 579.67 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 147.8 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:08,788 INFO L168 Benchmark]: TraceAbstraction took 14969.23 ms. Allocated memory was 201.9 MB in the beginning and 401.6 MB in the end (delta: 199.8 MB). Free memory was 147.8 MB in the beginning and 212.9 MB in the end (delta: -65.1 MB). Peak memory consumption was 134.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:49:08,793 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.64 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 180.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.37 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 579.67 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 147.8 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14969.23 ms. Allocated memory was 201.9 MB in the beginning and 401.6 MB in the end (delta: 199.8 MB). Free memory was 147.8 MB in the beginning and 212.9 MB in the end (delta: -65.1 MB). Peak memory consumption was 134.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int m_i ; [L20] int t1_i ; [L21] int M_E = 2; [L22] int T1_E = 2; [L23] int E_1 = 2; [L439] int __retres1 ; [L443] CALL init_model() [L354] m_i = 1 [L355] t1_i = 1 [L443] RET init_model() [L444] CALL start_simulation() [L380] int kernel_st ; [L381] int tmp ; [L382] int tmp___0 ; [L386] kernel_st = 0 [L387] FCALL update_channels() [L388] CALL init_threads() [L151] COND TRUE m_i == 1 [L152] m_st = 0 [L156] COND TRUE t1_i == 1 [L157] t1_st = 0 [L388] RET init_threads() [L389] CALL fire_delta_events() [L240] COND FALSE !(M_E == 0) [L245] COND FALSE !(T1_E == 0) [L250] COND FALSE !(E_1 == 0) [L389] RET fire_delta_events() [L390] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND FALSE !(t1_pc == 1) [L134] __retres1 = 0 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND FALSE !(\read(tmp___0)) [L390] RET activate_threads() [L391] CALL reset_delta_events() [L263] COND FALSE !(M_E == 1) [L268] COND FALSE !(T1_E == 1) [L273] COND FALSE !(E_1 == 1) [L391] RET reset_delta_events() [L394] COND TRUE 1 [L397] kernel_st = 1 [L398] CALL eval() [L187] int tmp ; [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND FALSE !(\read(tmp_ndt_1)) [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND TRUE t1_pc == 0 [L83] COND TRUE 1 [L85] t1_pc = 1 [L86] t1_st = 2 [L221] RET transmit1() [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND TRUE \read(tmp_ndt_1) [L206] m_st = 1 [L207] CALL master() [L31] COND TRUE m_pc == 0 [L42] COND TRUE 1 [L45] E_1 = 1 [L46] CALL immediate_notify() [L312] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND TRUE t1_pc == 1 [L125] COND TRUE E_1 == 1 [L126] __retres1 = 1 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND TRUE \read(tmp___0) [L299] t1_st = 0 [L312] RET activate_threads() [L46] RET immediate_notify() [L47] E_1 = 2 [L50] COND TRUE 1 [L52] m_pc = 1 [L53] m_st = 2 [L207] RET master() [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND FALSE !(t1_pc == 0) [L75] COND TRUE t1_pc == 1 [L91] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1103 SDtfs, 4316 SDslu, 485 SDs, 0 SdLazy, 7372 SolverSat, 2610 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1489occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 1381 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 803 NumberOfCodeBlocks, 803 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 666 ConstructedInterpolants, 0 QuantifiedInterpolants, 121640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 54/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...