/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:58:03,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:58:03,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:58:03,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:58:03,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:58:03,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:58:03,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:58:03,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:58:03,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:58:03,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:58:03,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:58:03,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:58:03,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:58:03,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:58:03,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:58:03,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:58:03,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:58:03,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:58:03,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:58:03,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:58:03,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:58:03,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:58:03,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:58:03,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:58:03,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:58:03,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:58:03,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:58:03,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:58:03,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:58:03,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:58:03,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:58:03,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:58:03,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:58:03,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:58:03,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:58:03,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:58:03,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:58:03,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:58:03,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:58:03,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:58:03,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:58:03,643 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 [2020-08-19 06:58:03,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:58:03,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:58:03,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:58:03,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:58:03,684 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:58:03,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:58:03,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:58:03,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:58:03,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:58:03,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:58:03,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:58:03,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:58:03,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:58:03,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:58:03,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:58:03,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:58:03,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:58:03,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:58:03,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:58:03,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:58:03,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:58:03,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:58:03,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:58:03,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:58:03,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:58:03,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:58:03,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:58:03,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:58:03,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:58:03,690 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:58:04,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:58:04,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:58:04,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:58:04,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:58:04,028 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:58:04,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 06:58:04,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5aaea5f6/02dfb2b505fa4e37a43d7cdb11072b88/FLAGd829aaa3a [2020-08-19 06:58:04,532 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:58:04,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-08-19 06:58:04,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5aaea5f6/02dfb2b505fa4e37a43d7cdb11072b88/FLAGd829aaa3a [2020-08-19 06:58:04,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5aaea5f6/02dfb2b505fa4e37a43d7cdb11072b88 [2020-08-19 06:58:04,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:58:04,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:58:04,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:58:04,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:58:04,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:58:04,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:58:04" (1/1) ... [2020-08-19 06:58:04,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b86ba66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:04, skipping insertion in model container [2020-08-19 06:58:04,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:58:04" (1/1) ... [2020-08-19 06:58:04,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:58:04,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:58:05,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:58:05,155 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:58:05,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:58:05,318 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:58:05,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05 WrapperNode [2020-08-19 06:58:05,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:58:05,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:58:05,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:58:05,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:58:05,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05" (1/1) ... [2020-08-19 06:58:05,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05" (1/1) ... [2020-08-19 06:58:05,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05" (1/1) ... [2020-08-19 06:58:05,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05" (1/1) ... [2020-08-19 06:58:05,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05" (1/1) ... [2020-08-19 06:58:05,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05" (1/1) ... [2020-08-19 06:58:05,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05" (1/1) ... [2020-08-19 06:58:05,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:58:05,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:58:05,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:58:05,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:58:05,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05" (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 [2020-08-19 06:58:05,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:58:05,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:58:05,426 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-19 06:58:05,426 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-19 06:58:05,426 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-19 06:58:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-19 06:58:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-19 06:58:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-19 06:58:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-19 06:58:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-19 06:58:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-19 06:58:05,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-19 06:58:05,428 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-19 06:58:05,428 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-19 06:58:05,428 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-19 06:58:05,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-19 06:58:05,428 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-19 06:58:05,429 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-19 06:58:05,429 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-19 06:58:05,429 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-19 06:58:05,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:58:05,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:58:05,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:58:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-19 06:58:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-19 06:58:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-19 06:58:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-19 06:58:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-19 06:58:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-19 06:58:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-19 06:58:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-19 06:58:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-19 06:58:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-19 06:58:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-19 06:58:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-19 06:58:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-19 06:58:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-19 06:58:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-19 06:58:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-19 06:58:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-19 06:58:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-19 06:58:05,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:58:05,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:58:05,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:58:05,865 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:58:05,865 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:58:05,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:58:05 BoogieIcfgContainer [2020-08-19 06:58:05,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:58:05,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:58:05,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:58:05,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:58:05,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:58:04" (1/3) ... [2020-08-19 06:58:05,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b23a232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:58:05, skipping insertion in model container [2020-08-19 06:58:05,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:58:05" (2/3) ... [2020-08-19 06:58:05,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b23a232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:58:05, skipping insertion in model container [2020-08-19 06:58:05,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:58:05" (3/3) ... [2020-08-19 06:58:05,877 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-08-19 06:58:05,887 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:58:05,894 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:58:05,907 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:58:05,931 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:58:05,932 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:58:05,932 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:58:05,932 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:58:05,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:58:05,932 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:58:05,932 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:58:05,932 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:58:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-08-19 06:58:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 06:58:05,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:58:05,968 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] [2020-08-19 06:58:05,968 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:58:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:58:05,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-08-19 06:58:05,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:58:05,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891811626] [2020-08-19 06:58:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:58:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:58:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:58:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:58:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:58:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:58:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:58:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:58:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:58:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:58:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:58:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:58:06,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891811626] [2020-08-19 06:58:06,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:58:06,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:58:06,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265755475] [2020-08-19 06:58:06,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:58:06,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:58:06,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:58:06,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:58:06,500 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2020-08-19 06:58:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:58:08,194 INFO L93 Difference]: Finished difference Result 479 states and 724 transitions. [2020-08-19 06:58:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:58:08,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 06:58:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:58:08,214 INFO L225 Difference]: With dead ends: 479 [2020-08-19 06:58:08,214 INFO L226 Difference]: Without dead ends: 340 [2020-08-19 06:58:08,220 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 [2020-08-19 06:58:08,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-19 06:58:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2020-08-19 06:58:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 06:58:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 300 transitions. [2020-08-19 06:58:08,325 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 300 transitions. Word has length 75 [2020-08-19 06:58:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:58:08,326 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 300 transitions. [2020-08-19 06:58:08,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:58:08,326 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 300 transitions. [2020-08-19 06:58:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 06:58:08,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:58:08,330 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] [2020-08-19 06:58:08,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:58:08,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:58:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:58:08,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1022106246, now seen corresponding path program 1 times [2020-08-19 06:58:08,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:58:08,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932145489] [2020-08-19 06:58:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:58:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:58:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:58:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:58:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:58:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:58:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:58:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:58:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:58:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:58:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:58:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:58:08,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932145489] [2020-08-19 06:58:08,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:58:08,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:58:08,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614087356] [2020-08-19 06:58:08,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:58:08,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:58:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:58:08,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:58:08,556 INFO L87 Difference]: Start difference. First operand 233 states and 300 transitions. Second operand 10 states. [2020-08-19 06:58:09,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:58:09,478 INFO L93 Difference]: Finished difference Result 545 states and 744 transitions. [2020-08-19 06:58:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:58:09,478 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 06:58:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:58:09,485 INFO L225 Difference]: With dead ends: 545 [2020-08-19 06:58:09,486 INFO L226 Difference]: Without dead ends: 331 [2020-08-19 06:58:09,494 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 [2020-08-19 06:58:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-19 06:58:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 233. [2020-08-19 06:58:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 06:58:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2020-08-19 06:58:09,555 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 75 [2020-08-19 06:58:09,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:58:09,556 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2020-08-19 06:58:09,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:58:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2020-08-19 06:58:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 06:58:09,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:58:09,559 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] [2020-08-19 06:58:09,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:58:09,559 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:58:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:58:09,560 INFO L82 PathProgramCache]: Analyzing trace with hash -437656962, now seen corresponding path program 1 times [2020-08-19 06:58:09,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:58:09,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669029528] [2020-08-19 06:58:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:58:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:58:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:58:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:58:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:58:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:58:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:58:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:58:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:58:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:58:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:58:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:58:09,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669029528] [2020-08-19 06:58:09,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:58:09,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:58:09,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701674582] [2020-08-19 06:58:09,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:58:09,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:58:09,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:58:09,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:58:09,722 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand 10 states. [2020-08-19 06:58:10,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:58:10,938 INFO L93 Difference]: Finished difference Result 548 states and 738 transitions. [2020-08-19 06:58:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:58:10,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-08-19 06:58:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:58:10,946 INFO L225 Difference]: With dead ends: 548 [2020-08-19 06:58:10,947 INFO L226 Difference]: Without dead ends: 335 [2020-08-19 06:58:10,948 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 [2020-08-19 06:58:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-19 06:58:10,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 238. [2020-08-19 06:58:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-19 06:58:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 297 transitions. [2020-08-19 06:58:11,001 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 297 transitions. Word has length 75 [2020-08-19 06:58:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:58:11,003 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 297 transitions. [2020-08-19 06:58:11,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:58:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 297 transitions. [2020-08-19 06:58:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 06:58:11,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:58:11,007 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] [2020-08-19 06:58:11,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:58:11,008 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:58:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:58:11,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2011943168, now seen corresponding path program 1 times [2020-08-19 06:58:11,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:58:11,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636720585] [2020-08-19 06:58:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:58:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:58:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:58:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:58:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:58:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:58:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:58:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:58:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:58:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:58:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:58:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:58:11,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636720585] [2020-08-19 06:58:11,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:58:11,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:58:11,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163475535] [2020-08-19 06:58:11,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:58:11,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:58:11,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:58:11,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:58:11,199 INFO L87 Difference]: Start difference. First operand 238 states and 297 transitions. Second operand 9 states. [2020-08-19 06:58:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:58:12,754 INFO L93 Difference]: Finished difference Result 848 states and 1162 transitions. [2020-08-19 06:58:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:58:12,754 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-08-19 06:58:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:58:12,761 INFO L225 Difference]: With dead ends: 848 [2020-08-19 06:58:12,762 INFO L226 Difference]: Without dead ends: 630 [2020-08-19 06:58:12,764 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 [2020-08-19 06:58:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-08-19 06:58:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 459. [2020-08-19 06:58:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-19 06:58:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2020-08-19 06:58:12,827 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 75 [2020-08-19 06:58:12,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:58:12,828 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2020-08-19 06:58:12,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:58:12,828 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2020-08-19 06:58:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:58:12,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:58:12,831 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] [2020-08-19 06:58:12,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:58:12,831 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:58:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:58:12,832 INFO L82 PathProgramCache]: Analyzing trace with hash -3480132, now seen corresponding path program 1 times [2020-08-19 06:58:12,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:58:12,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717960745] [2020-08-19 06:58:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:58:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:58:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:58:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:58:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:58:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:58:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:58:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:58:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:58:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:58:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:58:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:58:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:58:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 06:58:13,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717960745] [2020-08-19 06:58:13,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:58:13,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:58:13,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666260750] [2020-08-19 06:58:13,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:58:13,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:58:13,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:58:13,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:58:13,003 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand 11 states. [2020-08-19 06:58:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:58:14,301 INFO L93 Difference]: Finished difference Result 1125 states and 1520 transitions. [2020-08-19 06:58:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:58:14,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 06:58:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:58:14,309 INFO L225 Difference]: With dead ends: 1125 [2020-08-19 06:58:14,310 INFO L226 Difference]: Without dead ends: 686 [2020-08-19 06:58:14,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:58:14,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-19 06:58:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 547. [2020-08-19 06:58:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-08-19 06:58:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 704 transitions. [2020-08-19 06:58:14,365 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 704 transitions. Word has length 93 [2020-08-19 06:58:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:58:14,366 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 704 transitions. [2020-08-19 06:58:14,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:58:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 704 transitions. [2020-08-19 06:58:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:58:14,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:58:14,367 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] [2020-08-19 06:58:14,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:58:14,368 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:58:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:58:14,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1935681914, now seen corresponding path program 1 times [2020-08-19 06:58:14,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:58:14,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176507984] [2020-08-19 06:58:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:58:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:58:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:58:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:58:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:58:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:58:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:58:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:58:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:58:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:58:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:58:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:58:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:58:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 06:58:14,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176507984] [2020-08-19 06:58:14,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:58:14,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:58:14,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129868884] [2020-08-19 06:58:14,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:58:14,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:58:14,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:58:14,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:58:14,523 INFO L87 Difference]: Start difference. First operand 547 states and 704 transitions. Second operand 11 states. [2020-08-19 06:58:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:58:16,101 INFO L93 Difference]: Finished difference Result 1387 states and 1883 transitions. [2020-08-19 06:58:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 06:58:16,102 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 06:58:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:58:16,114 INFO L225 Difference]: With dead ends: 1387 [2020-08-19 06:58:16,114 INFO L226 Difference]: Without dead ends: 859 [2020-08-19 06:58:16,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2020-08-19 06:58:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-08-19 06:58:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 647. [2020-08-19 06:58:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-08-19 06:58:16,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 788 transitions. [2020-08-19 06:58:16,204 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 788 transitions. Word has length 93 [2020-08-19 06:58:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:58:16,205 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 788 transitions. [2020-08-19 06:58:16,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:58:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 788 transitions. [2020-08-19 06:58:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:58:16,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:58:16,208 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] [2020-08-19 06:58:16,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:58:16,208 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:58:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:58:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2111138888, now seen corresponding path program 1 times [2020-08-19 06:58:16,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:58:16,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925118904] [2020-08-19 06:58:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:58:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:58:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:58:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:58:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:58:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:58:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:58:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:58:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:58:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:58:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:58:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:58:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:58:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 06:58:16,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925118904] [2020-08-19 06:58:16,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:58:16,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 06:58:16,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816203024] [2020-08-19 06:58:16,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:58:16,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:58:16,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:58:16,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:58:16,319 INFO L87 Difference]: Start difference. First operand 647 states and 788 transitions. Second operand 8 states. [2020-08-19 06:58:17,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:58:17,675 INFO L93 Difference]: Finished difference Result 1930 states and 2565 transitions. [2020-08-19 06:58:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:58:17,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 06:58:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:58:17,683 INFO L225 Difference]: With dead ends: 1930 [2020-08-19 06:58:17,684 INFO L226 Difference]: Without dead ends: 1304 [2020-08-19 06:58:17,687 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 [2020-08-19 06:58:17,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-19 06:58:17,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2020-08-19 06:58:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-19 06:58:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1386 transitions. [2020-08-19 06:58:17,771 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1386 transitions. Word has length 93 [2020-08-19 06:58:17,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:58:17,772 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1386 transitions. [2020-08-19 06:58:17,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:58:17,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1386 transitions. [2020-08-19 06:58:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 06:58:17,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:58:17,774 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] [2020-08-19 06:58:17,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:58:17,774 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:58:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:58:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1397737794, now seen corresponding path program 1 times [2020-08-19 06:58:17,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:58:17,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732349997] [2020-08-19 06:58:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:58:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:58:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:58:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:58:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:58:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:58:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:58:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:58:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:58:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:58:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:58:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:58:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:58:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:58:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 06:58:17,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732349997] [2020-08-19 06:58:17,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:58:17,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:58:17,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551296702] [2020-08-19 06:58:17,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:58:17,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:58:17,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:58:17,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:58:17,903 INFO L87 Difference]: Start difference. First operand 1099 states and 1386 transitions. Second operand 8 states. [2020-08-19 06:58:19,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:58:19,323 INFO L93 Difference]: Finished difference Result 3462 states and 4605 transitions. [2020-08-19 06:58:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:58:19,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-08-19 06:58:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:58:19,334 INFO L225 Difference]: With dead ends: 3462 [2020-08-19 06:58:19,334 INFO L226 Difference]: Without dead ends: 1841 [2020-08-19 06:58:19,341 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 [2020-08-19 06:58:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-08-19 06:58:19,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1489. [2020-08-19 06:58:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-08-19 06:58:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1820 transitions. [2020-08-19 06:58:19,456 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1820 transitions. Word has length 95 [2020-08-19 06:58:19,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:58:19,456 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1820 transitions. [2020-08-19 06:58:19,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:58:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1820 transitions. [2020-08-19 06:58:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-19 06:58:19,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:58:19,459 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] [2020-08-19 06:58:19,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:58:19,460 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:58:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:58:19,460 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-08-19 06:58:19,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:58:19,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406568156] [2020-08-19 06:58:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:58:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:58:19,502 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:58:19,502 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:58:19,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:58:19,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:58:19 BoogieIcfgContainer [2020-08-19 06:58:19,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:58:19,573 INFO L168 Benchmark]: Toolchain (without parser) took 14663.17 ms. Allocated memory was 137.9 MB in the beginning and 439.4 MB in the end (delta: 301.5 MB). Free memory was 101.3 MB in the beginning and 189.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 212.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:58:19,574 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:58:19,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.53 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 100.9 MB in the beginning and 179.0 MB in the end (delta: -78.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:58:19,575 INFO L168 Benchmark]: Boogie Preprocessor took 44.52 ms. Allocated memory is still 200.3 MB. Free memory was 179.0 MB in the beginning and 176.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:58:19,576 INFO L168 Benchmark]: RCFGBuilder took 505.52 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 146.3 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:58:19,580 INFO L168 Benchmark]: TraceAbstraction took 13690.81 ms. Allocated memory was 200.3 MB in the beginning and 439.4 MB in the end (delta: 239.1 MB). Free memory was 146.3 MB in the beginning and 189.9 MB in the end (delta: -43.5 MB). Peak memory consumption was 195.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:58:19,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 417.53 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 100.9 MB in the beginning and 179.0 MB in the end (delta: -78.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.52 ms. Allocated memory is still 200.3 MB. Free memory was 179.0 MB in the beginning and 176.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.52 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 146.3 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13690.81 ms. Allocated memory was 200.3 MB in the beginning and 439.4 MB in the end (delta: 239.1 MB). Free memory was 146.3 MB in the beginning and 189.9 MB in the end (delta: -43.5 MB). Peak memory consumption was 195.5 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: 13.5s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1103 SDtfs, 4316 SDslu, 485 SDs, 0 SdLazy, 7366 SolverSat, 2611 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s 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...