/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/systemc/bist_cell.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:08:40,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:08:40,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:08:40,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:08:40,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:08:40,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:08:40,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:08:40,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:08:40,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:08:40,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:08:40,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:08:40,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:08:40,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:08:40,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:08:40,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:08:40,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:08:40,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:08:40,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:08:40,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:08:40,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:08:40,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:08:40,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:08:40,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:08:40,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:08:40,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:08:40,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:08:40,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:08:40,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:08:40,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:08:40,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:08:40,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:08:40,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:08:40,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:08:40,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:08:40,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:08:40,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:08:40,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:08:40,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:08:40,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:08:40,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:08:40,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:08:40,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:08:40,836 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:08:40,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:08:40,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:08:40,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:08:40,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:08:40,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:08:40,838 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:08:40,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:08:40,838 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:08:40,838 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:08:40,838 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:08:40,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:08:40,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:08:40,839 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:08:40,839 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:08:40,839 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:08:40,839 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:08:40,839 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:08:40,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:08:40,840 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:08:40,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:08:40,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:08:40,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:08:40,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:08:40,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:08:40,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:08:40,841 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:08:40,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:08:40,841 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:08:40,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:08:40,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:08:40,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:08:40,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:08:40,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:08:40,842 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:08:40,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:08:40,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:08:40,843 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:08:40,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:08:40,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:08:40,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:08:40,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:08:41,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:08:41,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:08:41,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:08:41,094 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:08:41,095 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:08:41,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/bist_cell.cil.c [2023-04-01 06:08:42,315 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:08:42,495 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:08:42,495 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/bist_cell.cil.c [2023-04-01 06:08:42,503 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/438dc7a7c/1b9dac9a7bc64dfd94ebace59696abae/FLAG008438233 [2023-04-01 06:08:42,519 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/438dc7a7c/1b9dac9a7bc64dfd94ebace59696abae [2023-04-01 06:08:42,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:08:42,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:08:42,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:08:42,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:08:42,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:08:42,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564976d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42, skipping insertion in model container [2023-04-01 06:08:42,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:08:42,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:08:42,679 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/bist_cell.cil.c[639,652] [2023-04-01 06:08:42,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:08:42,740 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:08:42,749 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/bist_cell.cil.c[639,652] [2023-04-01 06:08:42,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:08:42,789 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:08:42,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42 WrapperNode [2023-04-01 06:08:42,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:08:42,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:08:42,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:08:42,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:08:42,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:08:42,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:08:42,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:08:42,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:08:42,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (1/1) ... [2023-04-01 06:08:42,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:08:42,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:08:42,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 06:08:42,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 06:08:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:08:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:08:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:08:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-01 06:08:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure method1 [2023-04-01 06:08:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure is_method1_triggered [2023-04-01 06:08:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure update_b0 [2023-04-01 06:08:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure update_b1 [2023-04-01 06:08:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure update_d0 [2023-04-01 06:08:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure update_d1 [2023-04-01 06:08:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure update_z [2023-04-01 06:08:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-01 06:08:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-01 06:08:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-01 06:08:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-01 06:08:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-01 06:08:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-01 06:08:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-01 06:08:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-01 06:08:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-01 06:08:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-01 06:08:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:08:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:08:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:08:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:08:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:08:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:08:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-01 06:08:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure method1 [2023-04-01 06:08:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure is_method1_triggered [2023-04-01 06:08:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure update_b0 [2023-04-01 06:08:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure update_b1 [2023-04-01 06:08:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure update_d0 [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure update_d1 [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure update_z [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-01 06:08:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-01 06:08:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-01 06:08:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-01 06:08:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:08:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:08:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:08:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:08:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:08:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:08:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:08:42,985 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:08:42,987 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:08:43,389 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:08:43,583 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:08:43,583 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-01 06:08:43,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:08:43 BoogieIcfgContainer [2023-04-01 06:08:43,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:08:43,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:08:43,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:08:43,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:08:43,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:08:42" (1/3) ... [2023-04-01 06:08:43,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48899c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:08:43, skipping insertion in model container [2023-04-01 06:08:43,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:42" (2/3) ... [2023-04-01 06:08:43,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48899c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:08:43, skipping insertion in model container [2023-04-01 06:08:43,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:08:43" (3/3) ... [2023-04-01 06:08:43,598 INFO L112 eAbstractionObserver]: Analyzing ICFG bist_cell.cil.c [2023-04-01 06:08:43,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:08:43,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:08:43,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:08:43,686 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62a87b90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:08:43,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:08:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 25 states have call successors, (25), 20 states have call predecessors, (25), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-01 06:08:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-01 06:08:43,696 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:08:43,697 INFO L195 NwaCegarLoop]: 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] [2023-04-01 06:08:43,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:08:43,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:08:43,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1686743138, now seen corresponding path program 1 times [2023-04-01 06:08:43,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:08:43,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871040631] [2023-04-01 06:08:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:08:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:08:44,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:08:44,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871040631] [2023-04-01 06:08:44,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871040631] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:08:44,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:08:44,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:08:44,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725492265] [2023-04-01 06:08:44,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:08:44,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:08:44,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:08:44,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:08:44,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:08:44,248 INFO L87 Difference]: Start difference. First operand has 89 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 25 states have call successors, (25), 20 states have call predecessors, (25), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 06:08:44,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:08:44,570 INFO L93 Difference]: Finished difference Result 185 states and 224 transitions. [2023-04-01 06:08:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 06:08:44,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 40 [2023-04-01 06:08:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:08:44,584 INFO L225 Difference]: With dead ends: 185 [2023-04-01 06:08:44,584 INFO L226 Difference]: Without dead ends: 103 [2023-04-01 06:08:44,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:08:44,594 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 53 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:08:44,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 169 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:08:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-04-01 06:08:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-04-01 06:08:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 50 states have (on average 1.26) internal successors, (63), 60 states have internal predecessors, (63), 29 states have call successors, (29), 25 states have call predecessors, (29), 23 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2023-04-01 06:08:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2023-04-01 06:08:44,666 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 40 [2023-04-01 06:08:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:08:44,667 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2023-04-01 06:08:44,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 06:08:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2023-04-01 06:08:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 06:08:44,674 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:08:44,674 INFO L195 NwaCegarLoop]: 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] [2023-04-01 06:08:44,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:08:44,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:08:44,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:08:44,676 INFO L85 PathProgramCache]: Analyzing trace with hash -540040270, now seen corresponding path program 1 times [2023-04-01 06:08:44,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:08:44,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222107706] [2023-04-01 06:08:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:44,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:08:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:08:44,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:08:44,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222107706] [2023-04-01 06:08:44,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222107706] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:08:44,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514681927] [2023-04-01 06:08:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:44,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:08:44,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:08:44,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:08:44,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 06:08:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:45,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 06:08:45,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:08:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:08:45,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:08:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:08:45,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514681927] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:08:45,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1615526441] [2023-04-01 06:08:45,628 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-04-01 06:08:45,628 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:08:45,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:08:45,639 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:08:45,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:08:46,157 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 73 for LOIs [2023-04-01 06:08:46,202 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 97 for LOIs [2023-04-01 06:08:48,024 INFO L197 IcfgInterpreter]: Interpreting procedure init_model with input of size 93 for LOIs [2023-04-01 06:08:48,072 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 22 for LOIs [2023-04-01 06:08:48,075 INFO L197 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 88 for LOIs [2023-04-01 06:09:05,712 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 41 for LOIs [2023-04-01 06:09:05,724 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 101 for LOIs [2023-04-01 06:09:06,191 INFO L197 IcfgInterpreter]: Interpreting procedure update_b0 with input of size 63 for LOIs [2023-04-01 06:09:06,209 INFO L197 IcfgInterpreter]: Interpreting procedure eval with input of size 29 for LOIs [2023-04-01 06:09:06,307 INFO L197 IcfgInterpreter]: Interpreting procedure stop_simulation with input of size 19 for LOIs [2023-04-01 06:09:06,357 INFO L197 IcfgInterpreter]: Interpreting procedure init_threads with input of size 25 for LOIs [2023-04-01 06:09:06,361 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 38 for LOIs [2023-04-01 06:09:06,378 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 23 for LOIs [2023-04-01 06:09:06,383 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 29 for LOIs [2023-04-01 06:09:06,491 INFO L197 IcfgInterpreter]: Interpreting procedure is_method1_triggered with input of size 26 for LOIs [2023-04-01 06:09:06,503 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:09:10,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1062#(and (<= 1 |#StackHeapBarrier|) (= ~comp_m1_i~0 0) (= ~d1_val_t~0 1) (not (= ~z_val~0 0)) (= ~b0_val_t~0 1) (= |#NULL.offset| 0) (= ~b1_val_t~0 1) (= ~d0_val_t~0 1) (= |#NULL.base| 0))' at error location [2023-04-01 06:09:10,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:09:10,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:09:10,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2023-04-01 06:09:10,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001672903] [2023-04-01 06:09:10,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:09:10,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:09:10,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:09:10,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:09:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2393, Unknown=0, NotChecked=0, Total=2652 [2023-04-01 06:09:10,015 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 06:09:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:09:10,263 INFO L93 Difference]: Finished difference Result 226 states and 267 transitions. [2023-04-01 06:09:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 06:09:10,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 85 [2023-04-01 06:09:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:09:10,266 INFO L225 Difference]: With dead ends: 226 [2023-04-01 06:09:10,266 INFO L226 Difference]: Without dead ends: 135 [2023-04-01 06:09:10,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=266, Invalid=2490, Unknown=0, NotChecked=0, Total=2756 [2023-04-01 06:09:10,269 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 48 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:09:10,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 150 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:09:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-04-01 06:09:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 107. [2023-04-01 06:09:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 52 states have (on average 1.25) internal successors, (65), 61 states have internal predecessors, (65), 30 states have call successors, (30), 26 states have call predecessors, (30), 24 states have return successors, (29), 28 states have call predecessors, (29), 28 states have call successors, (29) [2023-04-01 06:09:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2023-04-01 06:09:10,283 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 85 [2023-04-01 06:09:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:09:10,283 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2023-04-01 06:09:10,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2023-04-01 06:09:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2023-04-01 06:09:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 06:09:10,285 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:09:10,286 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:09:10,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 06:09:10,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:09:10,495 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:09:10,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:09:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash -881131464, now seen corresponding path program 1 times [2023-04-01 06:09:10,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:09:10,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835209212] [2023-04-01 06:09:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:09:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:09:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:09:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:09:10,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:09:10,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835209212] [2023-04-01 06:09:10,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835209212] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:09:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80355835] [2023-04-01 06:09:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:09:10,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:09:10,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:09:10,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:09:10,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 06:09:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:09:10,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 06:09:10,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:09:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:09:10,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:09:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:09:11,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80355835] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:09:11,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [703738217] [2023-04-01 06:09:11,082 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2023-04-01 06:09:11,083 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:09:11,084 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:09:11,084 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:09:11,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:09:11,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 73 for LOIs [2023-04-01 06:09:11,321 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 97 for LOIs [2023-04-01 06:09:12,305 INFO L197 IcfgInterpreter]: Interpreting procedure init_model with input of size 93 for LOIs [2023-04-01 06:09:12,337 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 22 for LOIs [2023-04-01 06:09:12,341 INFO L197 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 88 for LOIs [2023-04-01 06:09:28,547 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 41 for LOIs [2023-04-01 06:09:28,563 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 101 for LOIs [2023-04-01 06:09:29,161 INFO L197 IcfgInterpreter]: Interpreting procedure update_b0 with input of size 63 for LOIs [2023-04-01 06:09:29,185 INFO L197 IcfgInterpreter]: Interpreting procedure update_b1 with input of size 29 for LOIs [2023-04-01 06:09:29,192 INFO L197 IcfgInterpreter]: Interpreting procedure eval with input of size 29 for LOIs [2023-04-01 06:09:29,295 INFO L197 IcfgInterpreter]: Interpreting procedure stop_simulation with input of size 19 for LOIs [2023-04-01 06:09:29,336 INFO L197 IcfgInterpreter]: Interpreting procedure init_threads with input of size 25 for LOIs [2023-04-01 06:09:29,338 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 38 for LOIs [2023-04-01 06:09:29,349 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 23 for LOIs [2023-04-01 06:09:29,354 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 29 for LOIs [2023-04-01 06:09:29,434 INFO L197 IcfgInterpreter]: Interpreting procedure is_method1_triggered with input of size 26 for LOIs [2023-04-01 06:09:29,444 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:09:33,024 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2158#(and (<= 1 |#StackHeapBarrier|) (= ~comp_m1_i~0 0) (= ~d1_val_t~0 1) (not (= ~z_val~0 0)) (= ~b0_val_t~0 1) (= |#NULL.offset| 0) (= ~b1_val_t~0 1) (= ~d0_val_t~0 1) (= |#NULL.base| 0))' at error location [2023-04-01 06:09:33,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:09:33,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:09:33,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2023-04-01 06:09:33,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874505170] [2023-04-01 06:09:33,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:09:33,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:09:33,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:09:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:09:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=2694, Unknown=0, NotChecked=0, Total=2970 [2023-04-01 06:09:33,028 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 6 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-04-01 06:09:33,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:09:33,242 INFO L93 Difference]: Finished difference Result 222 states and 261 transitions. [2023-04-01 06:09:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 06:09:33,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 6 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 88 [2023-04-01 06:09:33,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:09:33,244 INFO L225 Difference]: With dead ends: 222 [2023-04-01 06:09:33,244 INFO L226 Difference]: Without dead ends: 131 [2023-04-01 06:09:33,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2023-04-01 06:09:33,247 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 79 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:09:33,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 139 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:09:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-04-01 06:09:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2023-04-01 06:09:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 62 states have internal predecessors, (67), 31 states have call successors, (31), 27 states have call predecessors, (31), 25 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2023-04-01 06:09:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2023-04-01 06:09:33,260 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 88 [2023-04-01 06:09:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:09:33,260 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2023-04-01 06:09:33,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 6 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-04-01 06:09:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2023-04-01 06:09:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-01 06:09:33,262 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:09:33,262 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:09:33,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 06:09:33,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-01 06:09:33,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:09:33,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:09:33,475 INFO L85 PathProgramCache]: Analyzing trace with hash -121830107, now seen corresponding path program 1 times [2023-04-01 06:09:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:09:33,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872673199] [2023-04-01 06:09:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:09:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:09:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:09:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:09:33,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:09:33,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872673199] [2023-04-01 06:09:33,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872673199] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:09:33,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520704768] [2023-04-01 06:09:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:09:33,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:09:33,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:09:33,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:09:33,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 06:09:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:09:33,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 06:09:33,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:09:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:09:33,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:09:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 06:09:33,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520704768] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:09:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1150830278] [2023-04-01 06:09:33,982 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-04-01 06:09:33,982 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:09:33,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:09:33,983 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:09:33,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:09:34,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 73 for LOIs [2023-04-01 06:09:34,192 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 97 for LOIs [2023-04-01 06:09:35,012 INFO L197 IcfgInterpreter]: Interpreting procedure init_model with input of size 93 for LOIs [2023-04-01 06:09:35,035 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 22 for LOIs [2023-04-01 06:09:35,036 INFO L197 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 88 for LOIs