/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:34:33,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:34:33,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:34:33,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:34:33,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:34:33,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:34:33,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:34:33,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:34:33,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:34:33,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:34:33,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:34:33,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:34:33,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:34:33,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:34:33,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:34:33,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:34:33,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:34:33,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:34:33,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:34:33,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:34:33,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:34:33,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:34:33,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:34:33,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:34:33,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:34:33,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:34:33,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:34:33,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:34:33,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:34:33,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:34:33,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:34:33,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:34:33,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:34:33,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:34:33,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:34:33,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:34:33,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:34:33,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:34:33,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:34:33,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:34:33,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:34:33,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:34:33,925 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:34:33,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:34:33,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:34:33,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:34:33,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:34:33,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:34:33,927 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:34:33,927 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:34:33,927 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:34:33,927 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:34:33,927 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:34:33,928 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:34:33,928 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:34:33,928 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:34:33,928 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:34:33,928 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:34:33,928 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:34:33,928 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:34:33,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:34:33,929 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:34:33,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:34:33,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:34:33,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:34:33,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:34:33,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:34:33,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:34:33,930 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:34:33,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:34:33,930 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:34:33,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:34:33,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:34:33,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:34:33,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:34:33,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:34:33,931 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:34:33,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:34:33,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:34:33,931 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:34:33,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:34:33,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:34:33,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:34:33,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:34:34,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:34:34,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:34:34,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:34:34,193 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:34:34,194 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:34:34,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-01 06:34:35,334 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:34:35,676 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:34:35,676 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-01 06:34:35,703 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca8fa19e/e5baf25f358349cca0c380e5f67fb191/FLAG3083fd855 [2023-04-01 06:34:35,717 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca8fa19e/e5baf25f358349cca0c380e5f67fb191 [2023-04-01 06:34:35,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:34:35,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:34:35,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:34:35,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:34:35,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:34:35,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:34:35" (1/1) ... [2023-04-01 06:34:35,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b4b031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:35, skipping insertion in model container [2023-04-01 06:34:35,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:34:35" (1/1) ... [2023-04-01 06:34:35,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:34:35,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:34:36,227 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2023-04-01 06:34:36,263 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2023-04-01 06:34:36,267 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2023-04-01 06:34:36,289 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2023-04-01 06:34:36,301 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2023-04-01 06:34:36,323 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2023-04-01 06:34:36,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:34:36,677 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:34:36,714 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2023-04-01 06:34:36,721 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2023-04-01 06:34:36,724 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2023-04-01 06:34:36,728 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2023-04-01 06:34:36,733 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2023-04-01 06:34:36,744 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_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2023-04-01 06:34:36,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:34:37,001 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:34:37,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37 WrapperNode [2023-04-01 06:34:37,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:34:37,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:34:37,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:34:37,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:34:37,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (1/1) ... [2023-04-01 06:34:37,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (1/1) ... [2023-04-01 06:34:37,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (1/1) ... [2023-04-01 06:34:37,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (1/1) ... [2023-04-01 06:34:37,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (1/1) ... [2023-04-01 06:34:37,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (1/1) ... [2023-04-01 06:34:37,237 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (1/1) ... [2023-04-01 06:34:37,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (1/1) ... [2023-04-01 06:34:37,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:34:37,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:34:37,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:34:37,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:34:37,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (1/1) ... [2023-04-01 06:34:37,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:34:37,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:34:37,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 06:34:37,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 06:34:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:34:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:34:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:34:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:34:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:34:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:34:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:34:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:34:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:34:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:34:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:34:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:34:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:34:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:34:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:34:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:34:37,751 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:34:37,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:34:40,385 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:34:40,579 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:34:40,579 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:34:40,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:34:40 BoogieIcfgContainer [2023-04-01 06:34:40,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:34:40,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:34:40,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:34:40,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:34:40,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:34:35" (1/3) ... [2023-04-01 06:34:40,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2882e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:34:40, skipping insertion in model container [2023-04-01 06:34:40,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:37" (2/3) ... [2023-04-01 06:34:40,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2882e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:34:40, skipping insertion in model container [2023-04-01 06:34:40,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:34:40" (3/3) ... [2023-04-01 06:34:40,590 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-01 06:34:40,605 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:34:40,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-04-01 06:34:40,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:34:40,674 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;@6d083594, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:34:40,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-04-01 06:34:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 1710 states, 1699 states have (on average 1.7992937021777515) internal successors, (3057), 1705 states have internal predecessors, (3057), 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 06:34:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:34:40,706 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:40,707 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] [2023-04-01 06:34:40,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:34:40,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:40,711 INFO L85 PathProgramCache]: Analyzing trace with hash 989159878, now seen corresponding path program 1 times [2023-04-01 06:34:40,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:40,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384032447] [2023-04-01 06:34:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:40,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:41,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:41,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384032447] [2023-04-01 06:34:41,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384032447] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:41,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:41,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:34:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911157130] [2023-04-01 06:34:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:41,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:34:41,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:34:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:34:41,301 INFO L87 Difference]: Start difference. First operand has 1710 states, 1699 states have (on average 1.7992937021777515) internal successors, (3057), 1705 states have internal predecessors, (3057), 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 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 06:34:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:41,498 INFO L93 Difference]: Finished difference Result 2205 states and 3873 transitions. [2023-04-01 06:34:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:34:41,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 79 [2023-04-01 06:34:41,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:41,536 INFO L225 Difference]: With dead ends: 2205 [2023-04-01 06:34:41,536 INFO L226 Difference]: Without dead ends: 1904 [2023-04-01 06:34:41,556 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 06:34:41,558 INFO L413 NwaCegarLoop]: 3065 mSDtfsCounter, 1547 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4855 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:41,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 4855 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:34:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2023-04-01 06:34:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1894. [2023-04-01 06:34:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1885 states have (on average 1.3326259946949601) internal successors, (2512), 1890 states have internal predecessors, (2512), 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 06:34:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2515 transitions. [2023-04-01 06:34:41,703 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2515 transitions. Word has length 79 [2023-04-01 06:34:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:41,703 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 2515 transitions. [2023-04-01 06:34:41,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 06:34:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2515 transitions. [2023-04-01 06:34:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:34:41,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:41,708 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] [2023-04-01 06:34:41,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:34:41,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:34:41,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2064943935, now seen corresponding path program 1 times [2023-04-01 06:34:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:41,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884852177] [2023-04-01 06:34:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:41,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:41,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:41,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884852177] [2023-04-01 06:34:41,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884852177] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:41,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:41,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:34:41,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930201741] [2023-04-01 06:34:41,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:41,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:34:41,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:41,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:34:41,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:34:41,945 INFO L87 Difference]: Start difference. First operand 1894 states and 2515 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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 06:34:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:42,765 INFO L93 Difference]: Finished difference Result 3146 states and 4267 transitions. [2023-04-01 06:34:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:34:42,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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 79 [2023-04-01 06:34:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:42,771 INFO L225 Difference]: With dead ends: 3146 [2023-04-01 06:34:42,771 INFO L226 Difference]: Without dead ends: 1762 [2023-04-01 06:34:42,774 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 06:34:42,775 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 5348 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:42,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5348 Valid, 1133 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:34:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2023-04-01 06:34:42,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1752. [2023-04-01 06:34:42,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1743 states have (on average 1.3677567412507172) internal successors, (2384), 1748 states have internal predecessors, (2384), 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 06:34:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2387 transitions. [2023-04-01 06:34:42,839 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2387 transitions. Word has length 79 [2023-04-01 06:34:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:42,839 INFO L495 AbstractCegarLoop]: Abstraction has 1752 states and 2387 transitions. [2023-04-01 06:34:42,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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 06:34:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2387 transitions. [2023-04-01 06:34:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:34:42,842 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:42,842 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] [2023-04-01 06:34:42,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:34:42,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:34:42,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1840765649, now seen corresponding path program 1 times [2023-04-01 06:34:42,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:42,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680848755] [2023-04-01 06:34:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:42,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:42,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:42,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680848755] [2023-04-01 06:34:42,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680848755] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:42,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:42,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:34:42,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124587983] [2023-04-01 06:34:42,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:42,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:34:42,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:42,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:34:42,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:34:42,956 INFO L87 Difference]: Start difference. First operand 1752 states and 2387 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:34:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:43,131 INFO L93 Difference]: Finished difference Result 3228 states and 4465 transitions. [2023-04-01 06:34:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:34:43,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-01 06:34:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:43,138 INFO L225 Difference]: With dead ends: 3228 [2023-04-01 06:34:43,139 INFO L226 Difference]: Without dead ends: 2640 [2023-04-01 06:34:43,140 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 06:34:43,140 INFO L413 NwaCegarLoop]: 2240 mSDtfsCounter, 1438 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:43,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 3273 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:34:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2023-04-01 06:34:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2630. [2023-04-01 06:34:43,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2621 states have (on average 1.3685616177031668) internal successors, (3587), 2626 states have internal predecessors, (3587), 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 06:34:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3590 transitions. [2023-04-01 06:34:43,244 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3590 transitions. Word has length 80 [2023-04-01 06:34:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:43,244 INFO L495 AbstractCegarLoop]: Abstraction has 2630 states and 3590 transitions. [2023-04-01 06:34:43,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:34:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3590 transitions. [2023-04-01 06:34:43,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:34:43,248 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:43,248 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] [2023-04-01 06:34:43,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:34:43,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:34:43,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1066759160, now seen corresponding path program 1 times [2023-04-01 06:34:43,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833651049] [2023-04-01 06:34:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:43,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:43,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833651049] [2023-04-01 06:34:43,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833651049] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:43,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:43,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:34:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110475935] [2023-04-01 06:34:43,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:43,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:34:43,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:34:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:34:43,403 INFO L87 Difference]: Start difference. First operand 2630 states and 3590 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 06:34:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:44,094 INFO L93 Difference]: Finished difference Result 5122 states and 7148 transitions. [2023-04-01 06:34:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:34:44,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 80 [2023-04-01 06:34:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:44,104 INFO L225 Difference]: With dead ends: 5122 [2023-04-01 06:34:44,104 INFO L226 Difference]: Without dead ends: 3036 [2023-04-01 06:34:44,108 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 06:34:44,108 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 4204 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:44,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 901 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:34:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2023-04-01 06:34:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 3026. [2023-04-01 06:34:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 3017 states have (on average 1.3974146503148823) internal successors, (4216), 3022 states have internal predecessors, (4216), 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 06:34:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 4219 transitions. [2023-04-01 06:34:44,343 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 4219 transitions. Word has length 80 [2023-04-01 06:34:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:44,343 INFO L495 AbstractCegarLoop]: Abstraction has 3026 states and 4219 transitions. [2023-04-01 06:34:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 06:34:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 4219 transitions. [2023-04-01 06:34:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:34:44,347 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:44,347 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] [2023-04-01 06:34:44,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:34:44,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:34:44,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash -499509912, now seen corresponding path program 1 times [2023-04-01 06:34:44,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:44,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298741139] [2023-04-01 06:34:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:44,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:44,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:44,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298741139] [2023-04-01 06:34:44,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298741139] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:44,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:44,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:34:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085361589] [2023-04-01 06:34:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:44,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:34:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:44,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:34:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:34:44,448 INFO L87 Difference]: Start difference. First operand 3026 states and 4219 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 06:34:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:44,795 INFO L93 Difference]: Finished difference Result 6342 states and 8953 transitions. [2023-04-01 06:34:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:34:44,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 81 [2023-04-01 06:34:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:44,810 INFO L225 Difference]: With dead ends: 6342 [2023-04-01 06:34:44,810 INFO L226 Difference]: Without dead ends: 4744 [2023-04-01 06:34:44,814 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 06:34:44,814 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1041 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:44,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 2503 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:34:44,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2023-04-01 06:34:45,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 4734. [2023-04-01 06:34:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 4725 states have (on average 1.3947089947089948) internal successors, (6590), 4730 states have internal predecessors, (6590), 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 06:34:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 6593 transitions. [2023-04-01 06:34:45,130 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 6593 transitions. Word has length 81 [2023-04-01 06:34:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:45,130 INFO L495 AbstractCegarLoop]: Abstraction has 4734 states and 6593 transitions. [2023-04-01 06:34:45,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 06:34:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 6593 transitions. [2023-04-01 06:34:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:34:45,136 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:45,136 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] [2023-04-01 06:34:45,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:34:45,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:34:45,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash 771432465, now seen corresponding path program 1 times [2023-04-01 06:34:45,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344870462] [2023-04-01 06:34:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:45,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:45,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344870462] [2023-04-01 06:34:45,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344870462] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:45,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:45,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:34:45,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830701198] [2023-04-01 06:34:45,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:45,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:34:45,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:45,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:34:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:34:45,279 INFO L87 Difference]: Start difference. First operand 4734 states and 6593 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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 06:34:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:46,187 INFO L93 Difference]: Finished difference Result 10734 states and 15152 transitions. [2023-04-01 06:34:46,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:34:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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 81 [2023-04-01 06:34:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:46,205 INFO L225 Difference]: With dead ends: 10734 [2023-04-01 06:34:46,205 INFO L226 Difference]: Without dead ends: 6826 [2023-04-01 06:34:46,210 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 06:34:46,212 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 3614 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3614 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:46,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3614 Valid, 766 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:34:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2023-04-01 06:34:46,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6816. [2023-04-01 06:34:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6816 states, 6807 states have (on average 1.3972381372116938) internal successors, (9511), 6812 states have internal predecessors, (9511), 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 06:34:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 9514 transitions. [2023-04-01 06:34:46,652 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 9514 transitions. Word has length 81 [2023-04-01 06:34:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:46,652 INFO L495 AbstractCegarLoop]: Abstraction has 6816 states and 9514 transitions. [2023-04-01 06:34:46,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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 06:34:46,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 9514 transitions. [2023-04-01 06:34:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:34:46,658 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:46,658 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] [2023-04-01 06:34:46,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:34:46,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:34:46,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:46,659 INFO L85 PathProgramCache]: Analyzing trace with hash -909494, now seen corresponding path program 1 times [2023-04-01 06:34:46,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:46,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32722664] [2023-04-01 06:34:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:46,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:46,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:46,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32722664] [2023-04-01 06:34:46,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32722664] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:46,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:46,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:34:46,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040129378] [2023-04-01 06:34:46,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:46,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:34:46,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:46,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:34:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:34:46,758 INFO L87 Difference]: Start difference. First operand 6816 states and 9514 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 06:34:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:47,632 INFO L93 Difference]: Finished difference Result 15518 states and 21887 transitions. [2023-04-01 06:34:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:34:47,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 81 [2023-04-01 06:34:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:47,659 INFO L225 Difference]: With dead ends: 15518 [2023-04-01 06:34:47,659 INFO L226 Difference]: Without dead ends: 10832 [2023-04-01 06:34:47,667 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 06:34:47,667 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 662 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:47,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1787 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:34:47,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10832 states. [2023-04-01 06:34:48,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10832 to 10822. [2023-04-01 06:34:48,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10822 states, 10813 states have (on average 1.3951724775732914) internal successors, (15086), 10818 states have internal predecessors, (15086), 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 06:34:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10822 states to 10822 states and 15089 transitions. [2023-04-01 06:34:48,599 INFO L78 Accepts]: Start accepts. Automaton has 10822 states and 15089 transitions. Word has length 81 [2023-04-01 06:34:48,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:48,599 INFO L495 AbstractCegarLoop]: Abstraction has 10822 states and 15089 transitions. [2023-04-01 06:34:48,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 06:34:48,600 INFO L276 IsEmpty]: Start isEmpty. Operand 10822 states and 15089 transitions. [2023-04-01 06:34:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:34:48,608 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:48,608 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] [2023-04-01 06:34:48,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:34:48,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:34:48,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash -93429049, now seen corresponding path program 1 times [2023-04-01 06:34:48,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:48,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778592195] [2023-04-01 06:34:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:48,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:48,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:48,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778592195] [2023-04-01 06:34:48,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778592195] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:48,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:48,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:34:48,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711833533] [2023-04-01 06:34:48,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:48,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:34:48,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:48,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:34:48,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:34:48,709 INFO L87 Difference]: Start difference. First operand 10822 states and 15089 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 06:34:50,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:50,093 INFO L93 Difference]: Finished difference Result 26802 states and 37190 transitions. [2023-04-01 06:34:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:34:50,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 81 [2023-04-01 06:34:50,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:50,131 INFO L225 Difference]: With dead ends: 26802 [2023-04-01 06:34:50,131 INFO L226 Difference]: Without dead ends: 18791 [2023-04-01 06:34:50,147 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 06:34:50,148 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 642 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:50,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1966 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:34:50,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18791 states. [2023-04-01 06:34:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18791 to 18781. [2023-04-01 06:34:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18781 states, 18772 states have (on average 1.3683145109737906) internal successors, (25686), 18777 states have internal predecessors, (25686), 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 06:34:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18781 states to 18781 states and 25689 transitions. [2023-04-01 06:34:51,618 INFO L78 Accepts]: Start accepts. Automaton has 18781 states and 25689 transitions. Word has length 81 [2023-04-01 06:34:51,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:51,618 INFO L495 AbstractCegarLoop]: Abstraction has 18781 states and 25689 transitions. [2023-04-01 06:34:51,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 06:34:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 18781 states and 25689 transitions. [2023-04-01 06:34:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:34:51,683 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:51,683 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] [2023-04-01 06:34:51,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:34:51,683 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:34:51,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash -687281833, now seen corresponding path program 1 times [2023-04-01 06:34:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:51,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135106414] [2023-04-01 06:34:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:51,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:51,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135106414] [2023-04-01 06:34:51,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135106414] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:51,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:51,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:34:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686011908] [2023-04-01 06:34:51,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:51,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:34:51,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:34:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:34:51,905 INFO L87 Difference]: Start difference. First operand 18781 states and 25689 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 06:34:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:59,036 INFO L93 Difference]: Finished difference Result 80097 states and 110679 transitions. [2023-04-01 06:34:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 06:34:59,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 82 [2023-04-01 06:34:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:59,246 INFO L225 Difference]: With dead ends: 80097 [2023-04-01 06:34:59,247 INFO L226 Difference]: Without dead ends: 73482 [2023-04-01 06:34:59,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 06:34:59,279 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 6483 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6483 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:59,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6483 Valid, 1592 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:34:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73482 states. [2023-04-01 06:35:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73482 to 18829. [2023-04-01 06:35:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18829 states, 18820 states have (on average 1.3682252922422955) internal successors, (25750), 18825 states have internal predecessors, (25750), 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 06:35:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18829 states to 18829 states and 25753 transitions. [2023-04-01 06:35:02,094 INFO L78 Accepts]: Start accepts. Automaton has 18829 states and 25753 transitions. Word has length 82 [2023-04-01 06:35:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:02,094 INFO L495 AbstractCegarLoop]: Abstraction has 18829 states and 25753 transitions. [2023-04-01 06:35:02,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 06:35:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 18829 states and 25753 transitions. [2023-04-01 06:35:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:35:02,107 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:02,107 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] [2023-04-01 06:35:02,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 06:35:02,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:02,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1569726818, now seen corresponding path program 1 times [2023-04-01 06:35:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:02,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039659083] [2023-04-01 06:35:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:35:02,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039659083] [2023-04-01 06:35:02,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039659083] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:02,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:02,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:35:02,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557645073] [2023-04-01 06:35:02,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:02,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:35:02,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:02,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:35:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:35:02,304 INFO L87 Difference]: Start difference. First operand 18829 states and 25753 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 06:35:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:14,223 INFO L93 Difference]: Finished difference Result 83482 states and 114973 transitions. [2023-04-01 06:35:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 06:35:14,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 82 [2023-04-01 06:35:14,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:14,376 INFO L225 Difference]: With dead ends: 83482 [2023-04-01 06:35:14,376 INFO L226 Difference]: Without dead ends: 76598 [2023-04-01 06:35:14,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 06:35:14,407 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 6013 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6013 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:14,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6013 Valid, 1573 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:35:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76598 states. [2023-04-01 06:35:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76598 to 19009. [2023-04-01 06:35:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19009 states, 19000 states have (on average 1.3678947368421053) internal successors, (25990), 19005 states have internal predecessors, (25990), 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 06:35:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19009 states to 19009 states and 25993 transitions. [2023-04-01 06:35:17,601 INFO L78 Accepts]: Start accepts. Automaton has 19009 states and 25993 transitions. Word has length 82 [2023-04-01 06:35:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:17,601 INFO L495 AbstractCegarLoop]: Abstraction has 19009 states and 25993 transitions. [2023-04-01 06:35:17,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 06:35:17,601 INFO L276 IsEmpty]: Start isEmpty. Operand 19009 states and 25993 transitions. [2023-04-01 06:35:17,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:35:17,611 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:17,611 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] [2023-04-01 06:35:17,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 06:35:17,611 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:17,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1606515343, now seen corresponding path program 1 times [2023-04-01 06:35:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:17,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388620994] [2023-04-01 06:35:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:17,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:35:17,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:17,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388620994] [2023-04-01 06:35:17,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388620994] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:17,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:17,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:35:17,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838230659] [2023-04-01 06:35:17,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:17,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:35:17,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:35:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:35:17,795 INFO L87 Difference]: Start difference. First operand 19009 states and 25993 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 06:35:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:32,130 INFO L93 Difference]: Finished difference Result 76712 states and 105347 transitions. [2023-04-01 06:35:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 06:35:32,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 82 [2023-04-01 06:35:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:32,396 INFO L225 Difference]: With dead ends: 76712 [2023-04-01 06:35:32,396 INFO L226 Difference]: Without dead ends: 70122 [2023-04-01 06:35:32,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 06:35:32,422 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 5728 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5728 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:32,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5728 Valid, 1556 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:35:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70122 states.