/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 EqDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:32:59,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:32:59,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:32:59,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:32:59,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:32:59,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:32:59,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:32:59,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:32:59,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:32:59,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:32:59,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:32:59,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:32:59,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:32:59,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:32:59,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:32:59,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:32:59,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:32:59,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:32:59,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:32:59,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:32:59,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:32:59,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:32:59,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:32:59,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:32:59,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:32:59,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:32:59,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:32:59,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:32:59,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:32:59,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:32:59,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:32:59,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:32:59,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:32:59,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:32:59,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:32:59,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:32:59,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:32:59,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:32:59,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:32:59,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:32:59,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:32:59,588 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 12:32:59,620 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:32:59,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:32:59,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:32:59,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:32:59,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:32:59,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:32:59,624 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:32:59,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:32:59,624 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:32:59,625 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:32:59,625 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:32:59,625 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:32:59,625 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:32:59,626 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:32:59,626 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:32:59,626 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:32:59,626 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:32:59,626 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:32:59,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:32:59,627 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:32:59,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:32:59,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:32:59,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:32:59,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:32:59,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:32:59,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:32:59,628 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:32:59,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:32:59,628 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:32:59,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:32:59,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:32:59,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:32:59,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:32:59,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:32:59,629 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:32:59,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:32:59,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:32:59,629 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:32:59,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:32:59,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:32:59,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:32:59,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:32:59,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:32:59,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:32:59,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:32:59,900 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:32:59,901 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:32:59,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-01 12:33:01,101 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:33:01,353 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:33:01,354 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-01 12:33:01,365 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e816f83/f1b8ce32e4294e9f93a321b56d37d3c8/FLAGb281eea34 [2023-04-01 12:33:01,376 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e816f83/f1b8ce32e4294e9f93a321b56d37d3c8 [2023-04-01 12:33:01,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:33:01,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:33:01,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:33:01,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:33:01,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:33:01,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:33:01" (1/1) ... [2023-04-01 12:33:01,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f86ae32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:01, skipping insertion in model container [2023-04-01 12:33:01,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:33:01" (1/1) ... [2023-04-01 12:33:01,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:33:01,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:33:01,726 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13790,13803] [2023-04-01 12:33:01,737 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14437,14450] [2023-04-01 12:33:01,755 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15670,15683] [2023-04-01 12:33:01,765 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16730,16743] [2023-04-01 12:33:01,819 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25121,25134] [2023-04-01 12:33:01,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:33:01,880 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:33:01,974 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13790,13803] [2023-04-01 12:33:01,983 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14437,14450] [2023-04-01 12:33:01,998 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15670,15683] [2023-04-01 12:33:02,011 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16730,16743] [2023-04-01 12:33:02,120 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25121,25134] [2023-04-01 12:33:02,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:33:02,207 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:33:02,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02 WrapperNode [2023-04-01 12:33:02,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:33:02,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:33:02,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:33:02,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:33:02,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (1/1) ... [2023-04-01 12:33:02,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (1/1) ... [2023-04-01 12:33:02,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (1/1) ... [2023-04-01 12:33:02,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (1/1) ... [2023-04-01 12:33:02,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (1/1) ... [2023-04-01 12:33:02,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (1/1) ... [2023-04-01 12:33:02,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (1/1) ... [2023-04-01 12:33:02,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (1/1) ... [2023-04-01 12:33:02,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:33:02,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:33:02,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:33:02,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:33:02,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (1/1) ... [2023-04-01 12:33:02,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:33:02,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:33:02,382 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 12:33:02,392 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 12:33:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:33:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:33:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:33:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 12:33:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:33:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:33:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 12:33:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:33:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:33:02,570 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:33:02,572 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:33:03,655 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:33:03,991 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:33:03,991 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 12:33:03,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:33:03 BoogieIcfgContainer [2023-04-01 12:33:03,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:33:04,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:33:04,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:33:04,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:33:04,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:33:01" (1/3) ... [2023-04-01 12:33:04,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483e2427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:33:04, skipping insertion in model container [2023-04-01 12:33:04,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:33:02" (2/3) ... [2023-04-01 12:33:04,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483e2427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:33:04, skipping insertion in model container [2023-04-01 12:33:04,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:33:03" (3/3) ... [2023-04-01 12:33:04,005 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-01 12:33:04,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:33:04,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-04-01 12:33:04,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:33:04,094 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;@69266e0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:33:04,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-04-01 12:33:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 271 states have (on average 1.8044280442804428) internal successors, (489), 282 states have internal predecessors, (489), 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 12:33:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-01 12:33:04,122 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:04,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:04,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:04,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -597542721, now seen corresponding path program 1 times [2023-04-01 12:33:04,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:04,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16459964] [2023-04-01 12:33:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:04,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:05,644 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 12:33:05,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:05,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16459964] [2023-04-01 12:33:05,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16459964] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:05,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:05,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:33:05,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181700677] [2023-04-01 12:33:05,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:05,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:33:05,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:33:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:05,685 INFO L87 Difference]: Start difference. First operand has 287 states, 271 states have (on average 1.8044280442804428) internal successors, (489), 282 states have internal predecessors, (489), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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 12:33:05,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:05,980 INFO L93 Difference]: Finished difference Result 748 states and 1277 transitions. [2023-04-01 12:33:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:33:05,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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 115 [2023-04-01 12:33:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:05,997 INFO L225 Difference]: With dead ends: 748 [2023-04-01 12:33:05,997 INFO L226 Difference]: Without dead ends: 496 [2023-04-01 12:33:06,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:06,008 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 1269 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:06,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 1276 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:33:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-04-01 12:33:06,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 475. [2023-04-01 12:33:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 467 states have (on average 1.278372591006424) internal successors, (597), 471 states have internal predecessors, (597), 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 12:33:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 600 transitions. [2023-04-01 12:33:06,123 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 600 transitions. Word has length 115 [2023-04-01 12:33:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:06,124 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 600 transitions. [2023-04-01 12:33:06,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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 12:33:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 600 transitions. [2023-04-01 12:33:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-01 12:33:06,132 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:06,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:06,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:33:06,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:06,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1540502339, now seen corresponding path program 1 times [2023-04-01 12:33:06,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:06,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104238349] [2023-04-01 12:33:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:06,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:07,041 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 12:33:07,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:07,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104238349] [2023-04-01 12:33:07,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104238349] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:07,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:07,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:33:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643091120] [2023-04-01 12:33:07,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:07,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:33:07,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:07,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:33:07,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:07,056 INFO L87 Difference]: Start difference. First operand 475 states and 600 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 12:33:07,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:07,298 INFO L93 Difference]: Finished difference Result 1266 states and 1599 transitions. [2023-04-01 12:33:07,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:33:07,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 118 [2023-04-01 12:33:07,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:07,303 INFO L225 Difference]: With dead ends: 1266 [2023-04-01 12:33:07,303 INFO L226 Difference]: Without dead ends: 885 [2023-04-01 12:33:07,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:07,307 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 688 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:07,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 773 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:33:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-04-01 12:33:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 864. [2023-04-01 12:33:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 856 states have (on average 1.27803738317757) internal successors, (1094), 860 states have internal predecessors, (1094), 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 12:33:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1097 transitions. [2023-04-01 12:33:07,401 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1097 transitions. Word has length 118 [2023-04-01 12:33:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:07,401 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1097 transitions. [2023-04-01 12:33:07,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 12:33:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1097 transitions. [2023-04-01 12:33:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-01 12:33:07,404 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:07,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:07,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:33:07,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:07,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1039824552, now seen corresponding path program 1 times [2023-04-01 12:33:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:07,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840798461] [2023-04-01 12:33:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:07,532 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 12:33:07,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:07,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840798461] [2023-04-01 12:33:07,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840798461] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:07,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:07,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:33:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515849285] [2023-04-01 12:33:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:07,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:33:07,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:07,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:33:07,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:33:07,535 INFO L87 Difference]: Start difference. First operand 864 states and 1097 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:33:07,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:07,835 INFO L93 Difference]: Finished difference Result 1972 states and 2546 transitions. [2023-04-01 12:33:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:33:07,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-01 12:33:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:07,840 INFO L225 Difference]: With dead ends: 1972 [2023-04-01 12:33:07,841 INFO L226 Difference]: Without dead ends: 1205 [2023-04-01 12:33:07,843 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 12:33:07,843 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 131 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:07,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 665 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:33:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-04-01 12:33:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1064. [2023-04-01 12:33:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1056 states have (on average 1.3134469696969697) internal successors, (1387), 1060 states have internal predecessors, (1387), 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 12:33:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1390 transitions. [2023-04-01 12:33:07,970 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1390 transitions. Word has length 121 [2023-04-01 12:33:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:07,970 INFO L495 AbstractCegarLoop]: Abstraction has 1064 states and 1390 transitions. [2023-04-01 12:33:07,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:33:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1390 transitions. [2023-04-01 12:33:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-01 12:33:07,972 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:07,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:07,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:33:07,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:07,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash -383127677, now seen corresponding path program 1 times [2023-04-01 12:33:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:07,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619940253] [2023-04-01 12:33:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:07,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:08,159 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 12:33:08,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619940253] [2023-04-01 12:33:08,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619940253] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:08,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:08,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:33:08,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791496191] [2023-04-01 12:33:08,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:08,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:33:08,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:08,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:33:08,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:08,164 INFO L87 Difference]: Start difference. First operand 1064 states and 1390 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 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 12:33:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:08,422 INFO L93 Difference]: Finished difference Result 1872 states and 2419 transitions. [2023-04-01 12:33:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:33:08,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 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 121 [2023-04-01 12:33:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:08,427 INFO L225 Difference]: With dead ends: 1872 [2023-04-01 12:33:08,427 INFO L226 Difference]: Without dead ends: 864 [2023-04-01 12:33:08,429 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 12:33:08,430 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 955 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:08,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 266 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:33:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-04-01 12:33:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2023-04-01 12:33:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 856 states have (on average 1.2651869158878504) internal successors, (1083), 860 states have internal predecessors, (1083), 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 12:33:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1086 transitions. [2023-04-01 12:33:08,542 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1086 transitions. Word has length 121 [2023-04-01 12:33:08,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:08,543 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1086 transitions. [2023-04-01 12:33:08,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 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 12:33:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1086 transitions. [2023-04-01 12:33:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-01 12:33:08,545 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:08,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:08,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:33:08,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:08,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:08,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1704493261, now seen corresponding path program 1 times [2023-04-01 12:33:08,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:08,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168170919] [2023-04-01 12:33:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:08,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:09,336 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 12:33:09,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:09,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168170919] [2023-04-01 12:33:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168170919] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:09,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:09,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:33:09,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778261845] [2023-04-01 12:33:09,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:09,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:33:09,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:33:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:09,344 INFO L87 Difference]: Start difference. First operand 864 states and 1086 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:33:09,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:09,616 INFO L93 Difference]: Finished difference Result 1612 states and 2048 transitions. [2023-04-01 12:33:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:33:09,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-01 12:33:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:09,621 INFO L225 Difference]: With dead ends: 1612 [2023-04-01 12:33:09,621 INFO L226 Difference]: Without dead ends: 991 [2023-04-01 12:33:09,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:09,623 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 786 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:09,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 609 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:33:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-04-01 12:33:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 864. [2023-04-01 12:33:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 856 states have (on average 1.2651869158878504) internal successors, (1083), 860 states have internal predecessors, (1083), 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 12:33:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1086 transitions. [2023-04-01 12:33:09,753 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1086 transitions. Word has length 121 [2023-04-01 12:33:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:09,754 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1086 transitions. [2023-04-01 12:33:09,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:33:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1086 transitions. [2023-04-01 12:33:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-01 12:33:09,756 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:09,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:09,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:33:09,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:09,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1594333376, now seen corresponding path program 1 times [2023-04-01 12:33:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:09,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714359175] [2023-04-01 12:33:09,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:09,951 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 12:33:09,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714359175] [2023-04-01 12:33:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714359175] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:09,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:33:09,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303458797] [2023-04-01 12:33:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:33:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:33:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:09,953 INFO L87 Difference]: Start difference. First operand 864 states and 1086 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 12:33:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:10,193 INFO L93 Difference]: Finished difference Result 1609 states and 2017 transitions. [2023-04-01 12:33:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:33:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 124 [2023-04-01 12:33:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:10,197 INFO L225 Difference]: With dead ends: 1609 [2023-04-01 12:33:10,197 INFO L226 Difference]: Without dead ends: 864 [2023-04-01 12:33:10,199 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 12:33:10,199 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 916 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:10,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 272 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:33:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-04-01 12:33:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2023-04-01 12:33:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 856 states have (on average 1.2441588785046729) internal successors, (1065), 860 states have internal predecessors, (1065), 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 12:33:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1068 transitions. [2023-04-01 12:33:10,338 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1068 transitions. Word has length 124 [2023-04-01 12:33:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:10,338 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1068 transitions. [2023-04-01 12:33:10,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 12:33:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1068 transitions. [2023-04-01 12:33:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-01 12:33:10,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:10,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:10,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:33:10,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:10,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash -331043488, now seen corresponding path program 1 times [2023-04-01 12:33:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:10,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487785306] [2023-04-01 12:33:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:10,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:10,936 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 12:33:10,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487785306] [2023-04-01 12:33:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487785306] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:10,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:10,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:33:10,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676738340] [2023-04-01 12:33:10,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:10,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:33:10,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:10,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:33:10,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:10,938 INFO L87 Difference]: Start difference. First operand 864 states and 1068 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 12:33:11,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:11,220 INFO L93 Difference]: Finished difference Result 1658 states and 2036 transitions. [2023-04-01 12:33:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:33:11,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 124 [2023-04-01 12:33:11,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:11,225 INFO L225 Difference]: With dead ends: 1658 [2023-04-01 12:33:11,226 INFO L226 Difference]: Without dead ends: 1267 [2023-04-01 12:33:11,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:11,227 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1333 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:11,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 600 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:33:11,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2023-04-01 12:33:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1246. [2023-04-01 12:33:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1238 states have (on average 1.2350565428109854) internal successors, (1529), 1242 states have internal predecessors, (1529), 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 12:33:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1532 transitions. [2023-04-01 12:33:11,388 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1532 transitions. Word has length 124 [2023-04-01 12:33:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:11,388 INFO L495 AbstractCegarLoop]: Abstraction has 1246 states and 1532 transitions. [2023-04-01 12:33:11,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 12:33:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1532 transitions. [2023-04-01 12:33:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-01 12:33:11,390 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:11,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:11,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:33:11,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:11,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash -886569302, now seen corresponding path program 1 times [2023-04-01 12:33:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231140297] [2023-04-01 12:33:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:12,159 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 12:33:12,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:12,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231140297] [2023-04-01 12:33:12,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231140297] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:12,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:12,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:33:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576565854] [2023-04-01 12:33:12,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:12,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:33:12,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:33:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:12,161 INFO L87 Difference]: Start difference. First operand 1246 states and 1532 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 12:33:12,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:12,504 INFO L93 Difference]: Finished difference Result 2073 states and 2580 transitions. [2023-04-01 12:33:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:33:12,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 127 [2023-04-01 12:33:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:12,510 INFO L225 Difference]: With dead ends: 2073 [2023-04-01 12:33:12,510 INFO L226 Difference]: Without dead ends: 1408 [2023-04-01 12:33:12,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:33:12,515 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 876 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:12,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 820 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:33:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2023-04-01 12:33:12,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1236. [2023-04-01 12:33:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1228 states have (on average 1.235342019543974) internal successors, (1517), 1232 states have internal predecessors, (1517), 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 12:33:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1520 transitions. [2023-04-01 12:33:12,798 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1520 transitions. Word has length 127 [2023-04-01 12:33:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:12,798 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1520 transitions. [2023-04-01 12:33:12,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 12:33:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1520 transitions. [2023-04-01 12:33:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-01 12:33:12,800 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:12,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:12,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:33:12,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:12,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1461094722, now seen corresponding path program 1 times [2023-04-01 12:33:12,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:12,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771151400] [2023-04-01 12:33:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:12,974 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 12:33:12,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:12,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771151400] [2023-04-01 12:33:12,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771151400] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:12,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:12,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:33:12,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653146406] [2023-04-01 12:33:12,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:12,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:33:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:33:12,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:33:12,977 INFO L87 Difference]: Start difference. First operand 1236 states and 1520 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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 12:33:13,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:13,316 INFO L93 Difference]: Finished difference Result 2391 states and 2937 transitions. [2023-04-01 12:33:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:33:13,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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 130 [2023-04-01 12:33:13,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:13,321 INFO L225 Difference]: With dead ends: 2391 [2023-04-01 12:33:13,321 INFO L226 Difference]: Without dead ends: 1236 [2023-04-01 12:33:13,323 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 12:33:13,325 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 908 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:13,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 266 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:33:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-04-01 12:33:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2023-04-01 12:33:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1228 states have (on average 1.2141693811074918) internal successors, (1491), 1232 states have internal predecessors, (1491), 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 12:33:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1494 transitions. [2023-04-01 12:33:13,562 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1494 transitions. Word has length 130 [2023-04-01 12:33:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:13,562 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1494 transitions. [2023-04-01 12:33:13,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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 12:33:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1494 transitions. [2023-04-01 12:33:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-01 12:33:13,565 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:13,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:13,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 12:33:13,565 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:13,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:13,566 INFO L85 PathProgramCache]: Analyzing trace with hash 526109085, now seen corresponding path program 1 times [2023-04-01 12:33:13,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228114236] [2023-04-01 12:33:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:24,004 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 12:33:24,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228114236] [2023-04-01 12:33:24,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228114236] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:24,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:24,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2023-04-01 12:33:24,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092297081] [2023-04-01 12:33:24,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:24,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-04-01 12:33:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:24,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-04-01 12:33:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 12:33:24,007 INFO L87 Difference]: Start difference. First operand 1236 states and 1494 transitions. Second operand has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 36 states have internal predecessors, (127), 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 12:33:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:33:40,389 INFO L93 Difference]: Finished difference Result 3917 states and 5078 transitions. [2023-04-01 12:33:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-01 12:33:40,390 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 36 states have internal predecessors, (127), 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 130 [2023-04-01 12:33:40,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:33:40,403 INFO L225 Difference]: With dead ends: 3917 [2023-04-01 12:33:40,403 INFO L226 Difference]: Without dead ends: 3439 [2023-04-01 12:33:40,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1373, Invalid=6283, Unknown=0, NotChecked=0, Total=7656 [2023-04-01 12:33:40,407 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 4984 mSDsluCounter, 8980 mSDsCounter, 0 mSdLazyCounter, 5905 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 9418 SdHoareTripleChecker+Invalid, 6022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 5905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:33:40,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4984 Valid, 9418 Invalid, 6022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 5905 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-01 12:33:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2023-04-01 12:33:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 1486. [2023-04-01 12:33:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1478 states have (on average 1.215832205683356) internal successors, (1797), 1482 states have internal predecessors, (1797), 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 12:33:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1800 transitions. [2023-04-01 12:33:40,756 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1800 transitions. Word has length 130 [2023-04-01 12:33:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:33:40,756 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 1800 transitions. [2023-04-01 12:33:40,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 36 states have internal predecessors, (127), 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 12:33:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1800 transitions. [2023-04-01 12:33:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-01 12:33:40,759 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:33:40,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:33:40,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 12:33:40,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 12:33:40,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:33:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1282712914, now seen corresponding path program 1 times [2023-04-01 12:33:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:33:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880242913] [2023-04-01 12:33:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:33:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:33:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:33:46,870 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 12:33:46,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:33:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880242913] [2023-04-01 12:33:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880242913] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:33:46,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:33:46,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2023-04-01 12:33:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729653109] [2023-04-01 12:33:46,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:33:46,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-04-01 12:33:46,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:33:46,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-04-01 12:33:46,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2023-04-01 12:33:46,874 INFO L87 Difference]: Start difference. First operand 1486 states and 1800 transitions. Second operand has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 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)