/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 IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:40:18,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:40:18,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:40:18,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:40:18,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:40:18,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:40:18,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:40:18,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:40:18,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:40:18,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:40:18,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:40:18,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:40:18,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:40:18,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:40:18,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:40:18,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:40:18,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:40:18,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:40:18,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:40:18,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:40:18,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:40:18,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:40:18,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:40:18,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:40:18,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 00:40:18,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 00:40:18,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 00:40:18,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 00:40:18,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 00:40:18,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 00:40:18,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:40:18,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:40:18,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:40:18,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:40:18,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:40:18,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:40:18,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:40:18,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:40:18,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:40:18,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:40:18,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:40:18,511 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 00:40:18,538 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:40:18,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:40:18,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:40:18,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:40:18,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:40:18,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:40:18,540 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:40:18,540 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:40:18,540 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:40:18,540 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:40:18,541 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:40:18,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:40:18,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:40:18,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:40:18,542 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:40:18,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:40:18,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:40:18,542 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:40:18,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:40:18,543 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:40:18,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:40:18,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:40:18,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:40:18,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:40:18,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:40:18,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:40:18,544 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:40:18,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:40:18,545 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:40:18,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:40:18,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:40:18,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:40:18,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:40:18,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:40:18,545 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:40:18,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:40:18,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:40:18,546 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:40:18,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:40:18,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:40:18,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:40:18,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:40:18,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:40:18,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:40:18,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:40:18,816 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:40:18,816 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:40:18,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-01 00:40:19,967 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:40:20,254 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:40:20,255 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-01 00:40:20,267 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0907d0e/6deec2e0ee2a42e6ae66f61a399d68b4/FLAG437eaa233 [2023-04-01 00:40:20,284 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0907d0e/6deec2e0ee2a42e6ae66f61a399d68b4 [2023-04-01 00:40:20,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:40:20,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:40:20,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:40:20,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:40:20,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:40:20,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:40:20" (1/1) ... [2023-04-01 00:40:20,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72129260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:20, skipping insertion in model container [2023-04-01 00:40:20,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:40:20" (1/1) ... [2023-04-01 00:40:20,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:40:20,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:40:20,703 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2023-04-01 00:40:20,721 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2023-04-01 00:40:20,739 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2023-04-01 00:40:20,748 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2023-04-01 00:40:20,805 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2023-04-01 00:40:20,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:40:20,866 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:40:20,985 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2023-04-01 00:40:20,991 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2023-04-01 00:40:20,999 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2023-04-01 00:40:21,006 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2023-04-01 00:40:21,041 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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2023-04-01 00:40:21,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:40:21,087 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:40:21,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21 WrapperNode [2023-04-01 00:40:21,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:40:21,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:40:21,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:40:21,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:40:21,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (1/1) ... [2023-04-01 00:40:21,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (1/1) ... [2023-04-01 00:40:21,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (1/1) ... [2023-04-01 00:40:21,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (1/1) ... [2023-04-01 00:40:21,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (1/1) ... [2023-04-01 00:40:21,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (1/1) ... [2023-04-01 00:40:21,180 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (1/1) ... [2023-04-01 00:40:21,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (1/1) ... [2023-04-01 00:40:21,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:40:21,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:40:21,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:40:21,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:40:21,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (1/1) ... [2023-04-01 00:40:21,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:40:21,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:40:21,232 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 00:40:21,255 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 00:40:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:40:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:40:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:40:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:40:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:40:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:40:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:40:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:40:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:40:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:40:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:40:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:40:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:40:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:40:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:40:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:40:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:40:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:40:21,494 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:40:21,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:40:22,597 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:40:23,028 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:40:23,030 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 00:40:23,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:40:23 BoogieIcfgContainer [2023-04-01 00:40:23,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:40:23,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:40:23,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:40:23,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:40:23,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:40:20" (1/3) ... [2023-04-01 00:40:23,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce49181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:40:23, skipping insertion in model container [2023-04-01 00:40:23,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:21" (2/3) ... [2023-04-01 00:40:23,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce49181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:40:23, skipping insertion in model container [2023-04-01 00:40:23,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:40:23" (3/3) ... [2023-04-01 00:40:23,044 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-01 00:40:23,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:40:23,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-04-01 00:40:23,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:40:23,119 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;@34234564, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:40:23,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-04-01 00:40:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 321 states, 305 states have (on average 1.8032786885245902) internal successors, (550), 316 states have internal predecessors, (550), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 00:40:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-01 00:40:23,139 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:23,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:23,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:23,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:23,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1818642, now seen corresponding path program 1 times [2023-04-01 00:40:23,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:23,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459263890] [2023-04-01 00:40:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:24,618 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 00:40:24,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:24,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459263890] [2023-04-01 00:40:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459263890] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:24,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:24,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:40:24,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540576464] [2023-04-01 00:40:24,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:24,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:40:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:24,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:40:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:24,668 INFO L87 Difference]: Start difference. First operand has 321 states, 305 states have (on average 1.8032786885245902) internal successors, (550), 316 states have internal predecessors, (550), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:25,078 INFO L93 Difference]: Finished difference Result 876 states and 1460 transitions. [2023-04-01 00:40:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:40:25,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-01 00:40:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:25,093 INFO L225 Difference]: With dead ends: 876 [2023-04-01 00:40:25,094 INFO L226 Difference]: Without dead ends: 645 [2023-04-01 00:40:25,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:25,101 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 934 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:25,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1602 Invalid, 164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:40:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-04-01 00:40:25,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 599. [2023-04-01 00:40:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 591 states have (on average 1.3756345177664975) internal successors, (813), 595 states have internal predecessors, (813), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 816 transitions. [2023-04-01 00:40:25,215 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 816 transitions. Word has length 121 [2023-04-01 00:40:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:25,217 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 816 transitions. [2023-04-01 00:40:25,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:25,217 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 816 transitions. [2023-04-01 00:40:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-01 00:40:25,226 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:25,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:25,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:40:25,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:25,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:25,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1724773960, now seen corresponding path program 1 times [2023-04-01 00:40:25,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:25,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730820347] [2023-04-01 00:40:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:25,964 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 00:40:25,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730820347] [2023-04-01 00:40:25,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730820347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:25,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:25,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:40:25,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387955699] [2023-04-01 00:40:25,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:25,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:40:25,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:40:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:25,979 INFO L87 Difference]: Start difference. First operand 599 states and 816 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:26,277 INFO L93 Difference]: Finished difference Result 1507 states and 2068 transitions. [2023-04-01 00:40:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:40:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-01 00:40:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:26,285 INFO L225 Difference]: With dead ends: 1507 [2023-04-01 00:40:26,285 INFO L226 Difference]: Without dead ends: 1085 [2023-04-01 00:40:26,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:26,291 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 709 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:26,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1211 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:40:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2023-04-01 00:40:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 990. [2023-04-01 00:40:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 982 states have (on average 1.3727087576374746) internal successors, (1348), 986 states have internal predecessors, (1348), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1351 transitions. [2023-04-01 00:40:26,377 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1351 transitions. Word has length 121 [2023-04-01 00:40:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:26,379 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1351 transitions. [2023-04-01 00:40:26,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1351 transitions. [2023-04-01 00:40:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-01 00:40:26,383 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:26,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:26,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:40:26,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:26,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1724435336, now seen corresponding path program 1 times [2023-04-01 00:40:26,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:26,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200937819] [2023-04-01 00:40:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:26,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:27,098 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 00:40:27,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:27,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200937819] [2023-04-01 00:40:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200937819] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:27,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:40:27,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424208620] [2023-04-01 00:40:27,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:27,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:40:27,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:27,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:40:27,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:27,105 INFO L87 Difference]: Start difference. First operand 990 states and 1351 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:27,412 INFO L93 Difference]: Finished difference Result 2051 states and 2841 transitions. [2023-04-01 00:40:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:40:27,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-01 00:40:27,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:27,419 INFO L225 Difference]: With dead ends: 2051 [2023-04-01 00:40:27,419 INFO L226 Difference]: Without dead ends: 1310 [2023-04-01 00:40:27,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:40:27,423 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 1073 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:27,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 988 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:27,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2023-04-01 00:40:27,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1277. [2023-04-01 00:40:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1269 states have (on average 1.396375098502758) internal successors, (1772), 1273 states have internal predecessors, (1772), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1775 transitions. [2023-04-01 00:40:27,583 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1775 transitions. Word has length 121 [2023-04-01 00:40:27,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:27,584 INFO L495 AbstractCegarLoop]: Abstraction has 1277 states and 1775 transitions. [2023-04-01 00:40:27,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1775 transitions. [2023-04-01 00:40:27,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-01 00:40:27,587 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:27,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:27,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:40:27,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:27,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1000627302, now seen corresponding path program 1 times [2023-04-01 00:40:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:27,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904032156] [2023-04-01 00:40:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:27,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:27,703 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 00:40:27,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904032156] [2023-04-01 00:40:27,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904032156] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:27,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:27,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:40:27,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882848329] [2023-04-01 00:40:27,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:27,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:40:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:27,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:40:27,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:27,707 INFO L87 Difference]: Start difference. First operand 1277 states and 1775 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:28,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:28,083 INFO L93 Difference]: Finished difference Result 3160 states and 4475 transitions. [2023-04-01 00:40:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:40:28,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2023-04-01 00:40:28,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:28,092 INFO L225 Difference]: With dead ends: 3160 [2023-04-01 00:40:28,093 INFO L226 Difference]: Without dead ends: 1963 [2023-04-01 00:40:28,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:28,101 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 222 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:28,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 770 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:28,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2023-04-01 00:40:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1838. [2023-04-01 00:40:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1830 states have (on average 1.43224043715847) internal successors, (2621), 1834 states have internal predecessors, (2621), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2624 transitions. [2023-04-01 00:40:28,371 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2624 transitions. Word has length 123 [2023-04-01 00:40:28,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:28,371 INFO L495 AbstractCegarLoop]: Abstraction has 1838 states and 2624 transitions. [2023-04-01 00:40:28,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2624 transitions. [2023-04-01 00:40:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-01 00:40:28,373 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:28,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:28,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:40:28,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:28,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:28,374 INFO L85 PathProgramCache]: Analyzing trace with hash -698159318, now seen corresponding path program 1 times [2023-04-01 00:40:28,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:28,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780645452] [2023-04-01 00:40:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:28,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:28,492 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 00:40:28,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:28,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780645452] [2023-04-01 00:40:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780645452] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:28,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:28,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:40:28,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047539481] [2023-04-01 00:40:28,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:28,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:40:28,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:28,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:40:28,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:28,499 INFO L87 Difference]: Start difference. First operand 1838 states and 2624 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:29,028 INFO L93 Difference]: Finished difference Result 4712 states and 6829 transitions. [2023-04-01 00:40:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:40:29,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2023-04-01 00:40:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:29,040 INFO L225 Difference]: With dead ends: 4712 [2023-04-01 00:40:29,040 INFO L226 Difference]: Without dead ends: 2995 [2023-04-01 00:40:29,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:29,048 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 202 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:29,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 751 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:29,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2023-04-01 00:40:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2896. [2023-04-01 00:40:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2888 states have (on average 1.4577562326869806) internal successors, (4210), 2892 states have internal predecessors, (4210), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4213 transitions. [2023-04-01 00:40:29,434 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4213 transitions. Word has length 123 [2023-04-01 00:40:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:29,435 INFO L495 AbstractCegarLoop]: Abstraction has 2896 states and 4213 transitions. [2023-04-01 00:40:29,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4213 transitions. [2023-04-01 00:40:29,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 00:40:29,437 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:29,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:29,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 00:40:29,438 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:29,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1577698265, now seen corresponding path program 1 times [2023-04-01 00:40:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:29,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322117964] [2023-04-01 00:40:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:29,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:29,672 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 00:40:29,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:29,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322117964] [2023-04-01 00:40:29,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322117964] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:29,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:29,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:40:29,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437021158] [2023-04-01 00:40:29,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:29,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:40:29,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:40:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:29,675 INFO L87 Difference]: Start difference. First operand 2896 states and 4213 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:30,220 INFO L93 Difference]: Finished difference Result 5718 states and 8334 transitions. [2023-04-01 00:40:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:40:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-01 00:40:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:30,231 INFO L225 Difference]: With dead ends: 5718 [2023-04-01 00:40:30,231 INFO L226 Difference]: Without dead ends: 2896 [2023-04-01 00:40:30,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:40:30,236 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1099 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:30,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 312 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:30,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2023-04-01 00:40:30,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2896. [2023-04-01 00:40:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2888 states have (on average 1.4411357340720221) internal successors, (4162), 2892 states have internal predecessors, (4162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4165 transitions. [2023-04-01 00:40:30,712 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4165 transitions. Word has length 126 [2023-04-01 00:40:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:30,713 INFO L495 AbstractCegarLoop]: Abstraction has 2896 states and 4165 transitions. [2023-04-01 00:40:30,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4165 transitions. [2023-04-01 00:40:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 00:40:30,715 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:30,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:30,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 00:40:30,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:30,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1383987572, now seen corresponding path program 1 times [2023-04-01 00:40:30,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:30,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555876171] [2023-04-01 00:40:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:30,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:31,458 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 00:40:31,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:31,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555876171] [2023-04-01 00:40:31,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555876171] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:31,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:31,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:40:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920848252] [2023-04-01 00:40:31,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:31,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:40:31,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:40:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:31,460 INFO L87 Difference]: Start difference. First operand 2896 states and 4165 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:32,143 INFO L93 Difference]: Finished difference Result 7009 states and 10125 transitions. [2023-04-01 00:40:32,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:40:32,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-01 00:40:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:32,159 INFO L225 Difference]: With dead ends: 7009 [2023-04-01 00:40:32,160 INFO L226 Difference]: Without dead ends: 4351 [2023-04-01 00:40:32,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:32,166 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 949 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:32,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 972 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2023-04-01 00:40:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 4318. [2023-04-01 00:40:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4310 states have (on average 1.4310904872389791) internal successors, (6168), 4314 states have internal predecessors, (6168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 6171 transitions. [2023-04-01 00:40:32,854 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 6171 transitions. Word has length 126 [2023-04-01 00:40:32,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:32,854 INFO L495 AbstractCegarLoop]: Abstraction has 4318 states and 6171 transitions. [2023-04-01 00:40:32,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 6171 transitions. [2023-04-01 00:40:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 00:40:32,857 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:32,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:32,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 00:40:32,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:32,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:32,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1661838492, now seen corresponding path program 1 times [2023-04-01 00:40:32,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:32,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726612841] [2023-04-01 00:40:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:32,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:33,059 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 00:40:33,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:33,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726612841] [2023-04-01 00:40:33,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726612841] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:33,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:33,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:40:33,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786524230] [2023-04-01 00:40:33,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:33,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:40:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:33,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:40:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:33,061 INFO L87 Difference]: Start difference. First operand 4318 states and 6171 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:33,897 INFO L93 Difference]: Finished difference Result 8523 states and 12201 transitions. [2023-04-01 00:40:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:40:33,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-01 00:40:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:33,915 INFO L225 Difference]: With dead ends: 8523 [2023-04-01 00:40:33,915 INFO L226 Difference]: Without dead ends: 4318 [2023-04-01 00:40:33,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:40:33,925 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1072 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:33,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 318 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4318 states. [2023-04-01 00:40:34,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4318 to 4318. [2023-04-01 00:40:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4310 states have (on average 1.417169373549884) internal successors, (6108), 4314 states have internal predecessors, (6108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 6111 transitions. [2023-04-01 00:40:34,562 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 6111 transitions. Word has length 126 [2023-04-01 00:40:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:34,562 INFO L495 AbstractCegarLoop]: Abstraction has 4318 states and 6111 transitions. [2023-04-01 00:40:34,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 6111 transitions. [2023-04-01 00:40:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 00:40:34,564 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:34,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:34,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 00:40:34,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:34,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:34,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1575390281, now seen corresponding path program 1 times [2023-04-01 00:40:34,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:34,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649067454] [2023-04-01 00:40:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:34,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:35,186 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 00:40:35,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:35,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649067454] [2023-04-01 00:40:35,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649067454] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:35,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:35,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:40:35,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954748377] [2023-04-01 00:40:35,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:35,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:40:35,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:35,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:40:35,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:35,188 INFO L87 Difference]: Start difference. First operand 4318 states and 6111 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:36,190 INFO L93 Difference]: Finished difference Result 8486 states and 12109 transitions. [2023-04-01 00:40:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:40:36,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-01 00:40:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:36,221 INFO L225 Difference]: With dead ends: 8486 [2023-04-01 00:40:36,222 INFO L226 Difference]: Without dead ends: 5659 [2023-04-01 00:40:36,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:36,229 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 923 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:36,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 735 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5659 states. [2023-04-01 00:40:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5659 to 4384. [2023-04-01 00:40:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4376 states have (on average 1.4149908592321756) internal successors, (6192), 4380 states have internal predecessors, (6192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 6195 transitions. [2023-04-01 00:40:37,012 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 6195 transitions. Word has length 126 [2023-04-01 00:40:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:37,013 INFO L495 AbstractCegarLoop]: Abstraction has 4384 states and 6195 transitions. [2023-04-01 00:40:37,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 6195 transitions. [2023-04-01 00:40:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-01 00:40:37,015 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:37,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:37,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 00:40:37,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:37,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash 538943360, now seen corresponding path program 1 times [2023-04-01 00:40:37,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:37,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26511233] [2023-04-01 00:40:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:37,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:37,116 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 00:40:37,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:37,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26511233] [2023-04-01 00:40:37,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26511233] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:37,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:37,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:40:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715024849] [2023-04-01 00:40:37,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:37,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:40:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:37,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:40:37,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:37,120 INFO L87 Difference]: Start difference. First operand 4384 states and 6195 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:38,246 INFO L93 Difference]: Finished difference Result 11924 states and 16997 transitions. [2023-04-01 00:40:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:40:38,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2023-04-01 00:40:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:38,270 INFO L225 Difference]: With dead ends: 11924 [2023-04-01 00:40:38,270 INFO L226 Difference]: Without dead ends: 7616 [2023-04-01 00:40:38,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:38,281 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 228 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:38,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 758 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7616 states. [2023-04-01 00:40:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7616 to 7370. [2023-04-01 00:40:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7370 states, 7362 states have (on average 1.4227112197772345) internal successors, (10474), 7366 states have internal predecessors, (10474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 10477 transitions. [2023-04-01 00:40:39,306 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 10477 transitions. Word has length 128 [2023-04-01 00:40:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:39,307 INFO L495 AbstractCegarLoop]: Abstraction has 7370 states and 10477 transitions. [2023-04-01 00:40:39,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 10477 transitions. [2023-04-01 00:40:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-01 00:40:39,310 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:39,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:39,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 00:40:39,310 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:39,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash 455946057, now seen corresponding path program 1 times [2023-04-01 00:40:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:39,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537951747] [2023-04-01 00:40:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:39,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:39,436 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 00:40:39,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:39,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537951747] [2023-04-01 00:40:39,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537951747] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:39,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:39,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:40:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771556319] [2023-04-01 00:40:39,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:39,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:40:39,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:40:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:39,439 INFO L87 Difference]: Start difference. First operand 7370 states and 10477 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:41,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:41,041 INFO L93 Difference]: Finished difference Result 16390 states and 23307 transitions. [2023-04-01 00:40:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:40:41,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2023-04-01 00:40:41,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:41,067 INFO L225 Difference]: With dead ends: 16390 [2023-04-01 00:40:41,068 INFO L226 Difference]: Without dead ends: 11827 [2023-04-01 00:40:41,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:41,080 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 290 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:41,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 816 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11827 states. [2023-04-01 00:40:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11827 to 11794. [2023-04-01 00:40:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11794 states, 11786 states have (on average 1.408620397081283) internal successors, (16602), 11790 states have internal predecessors, (16602), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11794 states to 11794 states and 16605 transitions. [2023-04-01 00:40:42,519 INFO L78 Accepts]: Start accepts. Automaton has 11794 states and 16605 transitions. Word has length 131 [2023-04-01 00:40:42,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:42,519 INFO L495 AbstractCegarLoop]: Abstraction has 11794 states and 16605 transitions. [2023-04-01 00:40:42,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 11794 states and 16605 transitions. [2023-04-01 00:40:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-01 00:40:42,522 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:42,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:42,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 00:40:42,522 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:42,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:42,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1497235770, now seen corresponding path program 1 times [2023-04-01 00:40:42,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:42,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86465709] [2023-04-01 00:40:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:42,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:43,098 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 00:40:43,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:43,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86465709] [2023-04-01 00:40:43,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86465709] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:43,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:43,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:40:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856095690] [2023-04-01 00:40:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:43,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:40:43,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:40:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:43,100 INFO L87 Difference]: Start difference. First operand 11794 states and 16605 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:45,409 INFO L93 Difference]: Finished difference Result 28098 states and 39937 transitions. [2023-04-01 00:40:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:40:45,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2023-04-01 00:40:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:45,445 INFO L225 Difference]: With dead ends: 28098 [2023-04-01 00:40:45,445 INFO L226 Difference]: Without dead ends: 16781 [2023-04-01 00:40:45,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:40:45,466 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 994 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:45,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 961 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:40:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16781 states. [2023-04-01 00:40:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16781 to 16760. [2023-04-01 00:40:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16760 states, 16752 states have (on average 1.4146370582617) internal successors, (23698), 16756 states have internal predecessors, (23698), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16760 states to 16760 states and 23701 transitions. [2023-04-01 00:40:48,067 INFO L78 Accepts]: Start accepts. Automaton has 16760 states and 23701 transitions. Word has length 131 [2023-04-01 00:40:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:48,067 INFO L495 AbstractCegarLoop]: Abstraction has 16760 states and 23701 transitions. [2023-04-01 00:40:48,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 16760 states and 23701 transitions. [2023-04-01 00:40:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 00:40:48,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:48,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:48,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 00:40:48,071 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:48,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1159192766, now seen corresponding path program 1 times [2023-04-01 00:40:48,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:48,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916409351] [2023-04-01 00:40:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:48,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:48,157 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 00:40:48,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916409351] [2023-04-01 00:40:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916409351] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:48,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:48,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:40:48,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418242033] [2023-04-01 00:40:48,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:48,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:40:48,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:40:48,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:48,160 INFO L87 Difference]: Start difference. First operand 16760 states and 23701 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:40:51,921 INFO L93 Difference]: Finished difference Result 40354 states and 56966 transitions. [2023-04-01 00:40:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:40:51,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2023-04-01 00:40:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:40:51,981 INFO L225 Difference]: With dead ends: 40354 [2023-04-01 00:40:51,981 INFO L226 Difference]: Without dead ends: 25316 [2023-04-01 00:40:52,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:40:52,014 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 215 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:40:52,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 790 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:40:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25316 states. [2023-04-01 00:40:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25316 to 24587. [2023-04-01 00:40:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24587 states, 24579 states have (on average 1.4028235485577119) internal successors, (34480), 24583 states have internal predecessors, (34480), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24587 states to 24587 states and 34483 transitions. [2023-04-01 00:40:55,763 INFO L78 Accepts]: Start accepts. Automaton has 24587 states and 34483 transitions. Word has length 136 [2023-04-01 00:40:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:40:55,764 INFO L495 AbstractCegarLoop]: Abstraction has 24587 states and 34483 transitions. [2023-04-01 00:40:55,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:40:55,764 INFO L276 IsEmpty]: Start isEmpty. Operand 24587 states and 34483 transitions. [2023-04-01 00:40:55,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 00:40:55,767 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:40:55,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:55,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 00:40:55,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:40:55,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:40:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash -420173017, now seen corresponding path program 1 times [2023-04-01 00:40:55,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:40:55,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337273800] [2023-04-01 00:40:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:40:55,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:40:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:40:56,770 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 00:40:56,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:40:56,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337273800] [2023-04-01 00:40:56,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337273800] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:40:56,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:40:56,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 00:40:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110607538] [2023-04-01 00:40:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:40:56,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 00:40:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:40:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 00:40:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:40:56,772 INFO L87 Difference]: Start difference. First operand 24587 states and 34483 transitions. Second operand has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 11 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:41:05,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:41:05,267 INFO L93 Difference]: Finished difference Result 70203 states and 98238 transitions. [2023-04-01 00:41:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 00:41:05,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 11 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2023-04-01 00:41:05,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:41:05,361 INFO L225 Difference]: With dead ends: 70203 [2023-04-01 00:41:05,361 INFO L226 Difference]: Without dead ends: 45679 [2023-04-01 00:41:05,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:41:05,403 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 2587 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 00:41:05,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2587 Valid, 3012 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 00:41:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45679 states. [2023-04-01 00:41:11,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45679 to 35833. [2023-04-01 00:41:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35833 states, 35825 states have (on average 1.391179344033496) internal successors, (49839), 35829 states have internal predecessors, (49839), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:41:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35833 states to 35833 states and 49842 transitions. [2023-04-01 00:41:11,402 INFO L78 Accepts]: Start accepts. Automaton has 35833 states and 49842 transitions. Word has length 136 [2023-04-01 00:41:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:41:11,402 INFO L495 AbstractCegarLoop]: Abstraction has 35833 states and 49842 transitions. [2023-04-01 00:41:11,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 11 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:41:11,402 INFO L276 IsEmpty]: Start isEmpty. Operand 35833 states and 49842 transitions. [2023-04-01 00:41:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 00:41:11,407 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:41:11,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:41:11,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 00:41:11,407 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:41:11,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:41:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1306419585, now seen corresponding path program 1 times [2023-04-01 00:41:11,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:41:11,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788344403] [2023-04-01 00:41:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:41:11,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:41:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:41:12,040 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 00:41:12,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:41:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788344403] [2023-04-01 00:41:12,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788344403] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:41:12,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:41:12,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:41:12,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783131641] [2023-04-01 00:41:12,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:41:12,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:41:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:41:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:41:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:41:12,043 INFO L87 Difference]: Start difference. First operand 35833 states and 49842 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)