/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:50:51,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:50:51,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:50:51,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:50:51,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:50:51,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:50:51,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:50:51,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:50:51,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:50:51,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:50:51,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:50:51,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:50:51,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:50:51,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:50:51,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:50:51,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:50:51,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:50:51,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:50:51,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:50:51,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:50:51,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:50:51,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:50:51,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:50:51,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:50:51,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:50:51,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:50:51,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:50:51,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:50:51,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:50:51,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:50:51,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:50:51,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:50:51,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:50:51,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:50:51,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:50:51,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:50:51,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:50:51,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:50:51,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:50:51,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:50:51,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:50:51,550 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 [2020-08-18 18:50:51,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:50:51,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:50:51,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:50:51,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:50:51,592 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:50:51,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:50:51,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:50:51,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:50:51,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:50:51,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:50:51,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:50:51,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:50:51,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:50:51,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:50:51,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:50:51,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:50:51,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:50:51,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:50:51,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:50:51,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:50:51,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:50:51,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:50:51,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:50:51,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:50:51,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:50:51,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:50:51,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:50:51,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:50:51,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:50:51,599 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:50:51,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:50:51,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:50:51,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:50:51,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:50:51,956 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:50:51,959 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-08-18 18:50:52,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e1c62d58/aecd6f91cf5f4fce8e9d9346f124d51c/FLAG609567b26 [2020-08-18 18:50:52,642 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:50:52,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.16.cil.c [2020-08-18 18:50:52,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e1c62d58/aecd6f91cf5f4fce8e9d9346f124d51c/FLAG609567b26 [2020-08-18 18:50:52,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e1c62d58/aecd6f91cf5f4fce8e9d9346f124d51c [2020-08-18 18:50:52,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:50:52,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:50:52,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:50:52,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:50:52,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:50:52,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:50:52" (1/1) ... [2020-08-18 18:50:52,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0b7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:52, skipping insertion in model container [2020-08-18 18:50:52,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:50:52" (1/1) ... [2020-08-18 18:50:52,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:50:53,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:50:53,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:50:53,507 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:50:53,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:50:53,666 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:50:53,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53 WrapperNode [2020-08-18 18:50:53,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:50:53,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:50:53,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:50:53,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:50:53,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53" (1/1) ... [2020-08-18 18:50:53,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53" (1/1) ... [2020-08-18 18:50:53,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53" (1/1) ... [2020-08-18 18:50:53,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53" (1/1) ... [2020-08-18 18:50:53,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53" (1/1) ... [2020-08-18 18:50:53,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53" (1/1) ... [2020-08-18 18:50:53,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53" (1/1) ... [2020-08-18 18:50:53,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:50:53,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:50:53,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:50:53,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:50:53,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53" (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 [2020-08-18 18:50:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:50:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:50:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-18 18:50:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-18 18:50:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-18 18:50:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-18 18:50:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2020-08-18 18:50:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2020-08-18 18:50:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2020-08-18 18:50:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2020-08-18 18:50:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2020-08-18 18:50:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2020-08-18 18:50:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2020-08-18 18:50:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit10 [2020-08-18 18:50:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit11 [2020-08-18 18:50:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit12 [2020-08-18 18:50:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit13 [2020-08-18 18:50:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit14 [2020-08-18 18:50:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-18 18:50:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-18 18:50:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-18 18:50:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2020-08-18 18:50:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2020-08-18 18:50:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2020-08-18 18:50:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2020-08-18 18:50:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2020-08-18 18:50:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2020-08-18 18:50:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2020-08-18 18:50:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit10_triggered [2020-08-18 18:50:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit11_triggered [2020-08-18 18:50:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit12_triggered [2020-08-18 18:50:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit13_triggered [2020-08-18 18:50:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit14_triggered [2020-08-18 18:50:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-18 18:50:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-18 18:50:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-18 18:50:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-18 18:50:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-18 18:50:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-18 18:50:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-18 18:50:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-18 18:50:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-18 18:50:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-18 18:50:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-18 18:50:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-18 18:50:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-18 18:50:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:50:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:50:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:50:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-18 18:50:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-18 18:50:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-18 18:50:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-18 18:50:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2020-08-18 18:50:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2020-08-18 18:50:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2020-08-18 18:50:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2020-08-18 18:50:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2020-08-18 18:50:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2020-08-18 18:50:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2020-08-18 18:50:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit10_triggered [2020-08-18 18:50:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit11_triggered [2020-08-18 18:50:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit12_triggered [2020-08-18 18:50:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit13_triggered [2020-08-18 18:50:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit14_triggered [2020-08-18 18:50:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-18 18:50:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-18 18:50:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-18 18:50:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-18 18:50:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2020-08-18 18:50:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2020-08-18 18:50:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2020-08-18 18:50:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2020-08-18 18:50:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2020-08-18 18:50:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2020-08-18 18:50:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2020-08-18 18:50:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure transmit10 [2020-08-18 18:50:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure transmit11 [2020-08-18 18:50:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure transmit12 [2020-08-18 18:50:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure transmit13 [2020-08-18 18:50:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure transmit14 [2020-08-18 18:50:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-18 18:50:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-18 18:50:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-18 18:50:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-18 18:50:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-18 18:50:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-18 18:50:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-18 18:50:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-18 18:50:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-18 18:50:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-18 18:50:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-18 18:50:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-18 18:50:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:50:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:50:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:50:55,053 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:50:55,054 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-08-18 18:50:55,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:50:55 BoogieIcfgContainer [2020-08-18 18:50:55,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:50:55,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:50:55,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:50:55,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:50:55,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:50:52" (1/3) ... [2020-08-18 18:50:55,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b02669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:50:55, skipping insertion in model container [2020-08-18 18:50:55,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:50:53" (2/3) ... [2020-08-18 18:50:55,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b02669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:50:55, skipping insertion in model container [2020-08-18 18:50:55,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:50:55" (3/3) ... [2020-08-18 18:50:55,071 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.16.cil.c [2020-08-18 18:50:55,082 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:50:55,091 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:50:55,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:50:55,136 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:50:55,136 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:50:55,136 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:50:55,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:50:55,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:50:55,137 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:50:55,137 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:50:55,137 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:50:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states. [2020-08-18 18:50:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 18:50:55,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:50:55,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:50:55,192 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:50:55,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:50:55,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1383974208, now seen corresponding path program 1 times [2020-08-18 18:50:55,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:50:55,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554416126] [2020-08-18 18:50:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:50:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,052 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 18:50:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:50:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:50:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:50:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:50:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:50:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:50:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:50:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:50:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 18:50:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:50:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:50:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 18:50:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:50:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:50:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:50:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 18:50:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:50:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:50:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:50:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 18:50:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 18:50:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 18:50:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 18:50:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:50:56,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554416126] [2020-08-18 18:50:56,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:50:56,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:50:56,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563763771] [2020-08-18 18:50:56,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:50:56,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:50:56,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:50:56,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:50:56,805 INFO L87 Difference]: Start difference. First operand 526 states. Second operand 12 states. [2020-08-18 18:50:57,196 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-18 18:50:57,341 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 18:50:57,704 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 18:50:57,928 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 18:51:00,373 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 18:51:00,685 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-08-18 18:51:01,021 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 18:51:01,188 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 18:51:01,500 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 18:51:01,660 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 18:51:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:51:10,051 INFO L93 Difference]: Finished difference Result 1409 states and 2346 transitions. [2020-08-18 18:51:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 18:51:10,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-08-18 18:51:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:51:10,080 INFO L225 Difference]: With dead ends: 1409 [2020-08-18 18:51:10,081 INFO L226 Difference]: Without dead ends: 887 [2020-08-18 18:51:10,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-08-18 18:51:10,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-08-18 18:51:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 522. [2020-08-18 18:51:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-08-18 18:51:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 765 transitions. [2020-08-18 18:51:10,302 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 765 transitions. Word has length 254 [2020-08-18 18:51:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:51:10,303 INFO L479 AbstractCegarLoop]: Abstraction has 522 states and 765 transitions. [2020-08-18 18:51:10,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:51:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 765 transitions. [2020-08-18 18:51:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 18:51:10,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:51:10,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:51:10,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:51:10,312 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:51:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:51:10,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1062988672, now seen corresponding path program 1 times [2020-08-18 18:51:10,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:51:10,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745350175] [2020-08-18 18:51:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:51:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:10,730 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 18:51:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:51:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:51:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:10,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:51:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:10,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:51:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:51:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:10,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:51:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:51:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:51:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 18:51:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:51:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:51:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 18:51:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:51:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:51:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:51:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 18:51:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:51:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:51:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:51:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 18:51:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 18:51:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 18:51:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 18:51:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:51:11,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745350175] [2020-08-18 18:51:11,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:51:11,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:51:11,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718213865] [2020-08-18 18:51:11,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:51:11,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:51:11,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:51:11,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:51:11,237 INFO L87 Difference]: Start difference. First operand 522 states and 765 transitions. Second operand 12 states. [2020-08-18 18:51:11,553 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-18 18:51:11,703 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 18:51:12,060 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 18:51:12,237 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 18:51:14,562 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 18:51:14,861 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-08-18 18:51:15,029 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 18:51:15,329 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 18:51:15,489 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-08-18 18:51:15,780 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-08-18 18:51:23,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:51:23,676 INFO L93 Difference]: Finished difference Result 1386 states and 2171 transitions. [2020-08-18 18:51:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:51:23,678 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-08-18 18:51:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:51:23,686 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 18:51:23,687 INFO L226 Difference]: Without dead ends: 888 [2020-08-18 18:51:23,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-08-18 18:51:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-08-18 18:51:23,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 527. [2020-08-18 18:51:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-18 18:51:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 769 transitions. [2020-08-18 18:51:23,801 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 769 transitions. Word has length 254 [2020-08-18 18:51:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:51:23,802 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 769 transitions. [2020-08-18 18:51:23,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:51:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 769 transitions. [2020-08-18 18:51:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 18:51:23,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:51:23,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:51:23,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:51:23,807 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:51:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:51:23,808 INFO L82 PathProgramCache]: Analyzing trace with hash 458447040, now seen corresponding path program 1 times [2020-08-18 18:51:23,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:51:23,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707479658] [2020-08-18 18:51:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:51:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,271 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 18:51:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:51:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:51:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:51:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:51:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:51:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:51:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:51:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:51:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 18:51:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:51:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:51:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 18:51:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:51:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:51:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:51:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 18:51:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:51:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:51:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:51:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 18:51:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 18:51:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 18:51:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 18:51:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:51:24,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707479658] [2020-08-18 18:51:24,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:51:24,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:51:24,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280339414] [2020-08-18 18:51:24,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:51:24,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:51:24,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:51:24,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:51:24,880 INFO L87 Difference]: Start difference. First operand 527 states and 769 transitions. Second operand 9 states. [2020-08-18 18:51:25,198 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 18:51:25,349 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 18:51:25,563 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 18:51:32,990 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-18 18:51:33,193 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 18:51:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:51:38,724 INFO L93 Difference]: Finished difference Result 2134 states and 3311 transitions. [2020-08-18 18:51:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 18:51:38,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2020-08-18 18:51:38,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:51:38,738 INFO L225 Difference]: With dead ends: 2134 [2020-08-18 18:51:38,738 INFO L226 Difference]: Without dead ends: 1639 [2020-08-18 18:51:38,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:51:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-08-18 18:51:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1040. [2020-08-18 18:51:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-08-18 18:51:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1532 transitions. [2020-08-18 18:51:38,933 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1532 transitions. Word has length 254 [2020-08-18 18:51:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:51:38,934 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1532 transitions. [2020-08-18 18:51:38,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:51:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1532 transitions. [2020-08-18 18:51:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 18:51:38,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:51:38,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:51:38,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:51:38,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:51:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:51:38,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1062661057, now seen corresponding path program 1 times [2020-08-18 18:51:38,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:51:38,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357717487] [2020-08-18 18:51:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:51:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,313 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 18:51:39,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:51:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:51:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:51:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:51:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:51:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:51:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:51:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:51:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 18:51:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:51:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:51:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 18:51:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:51:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:51:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:51:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 18:51:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:51:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:51:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:51:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 18:51:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 18:51:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 18:51:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 18:51:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:51:39,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357717487] [2020-08-18 18:51:39,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:51:39,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:51:39,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912451749] [2020-08-18 18:51:39,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:51:39,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:51:39,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:51:39,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:51:39,952 INFO L87 Difference]: Start difference. First operand 1040 states and 1532 transitions. Second operand 10 states. [2020-08-18 18:51:40,394 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 18:51:40,602 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 18:51:40,888 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 18:51:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:51:48,783 INFO L93 Difference]: Finished difference Result 2636 states and 4012 transitions. [2020-08-18 18:51:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:51:48,784 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 254 [2020-08-18 18:51:48,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:51:48,798 INFO L225 Difference]: With dead ends: 2636 [2020-08-18 18:51:48,798 INFO L226 Difference]: Without dead ends: 1628 [2020-08-18 18:51:48,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:51:48,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-08-18 18:51:48,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1040. [2020-08-18 18:51:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-08-18 18:51:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1525 transitions. [2020-08-18 18:51:48,977 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1525 transitions. Word has length 254 [2020-08-18 18:51:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:51:48,979 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1525 transitions. [2020-08-18 18:51:48,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:51:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1525 transitions. [2020-08-18 18:51:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-18 18:51:48,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:51:48,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:51:48,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:51:48,984 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:51:48,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:51:48,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1143415041, now seen corresponding path program 1 times [2020-08-18 18:51:48,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:51:48,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464805224] [2020-08-18 18:51:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:51:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,305 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-18 18:51:49,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:51:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:51:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:51:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:51:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,540 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-08-18 18:51:49,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:51:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:51:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:51:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:51:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 18:51:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:51:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:51:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 18:51:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:51:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:51:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:51:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 18:51:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:51:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:51:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:51:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 18:51:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 18:51:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 18:51:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 18:51:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:51:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:51:49,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464805224] [2020-08-18 18:51:49,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:51:49,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:51:49,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650485035] [2020-08-18 18:51:49,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:51:49,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:51:49,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:51:49,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:51:49,784 INFO L87 Difference]: Start difference. First operand 1040 states and 1525 transitions. Second operand 10 states. [2020-08-18 18:51:50,202 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-08-18 18:51:50,412 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 18:51:50,675 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 135