/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_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:40:32,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:40:32,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:40:32,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:40:32,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:40:32,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:40:32,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:40:32,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:40:32,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:40:32,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:40:32,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:40:32,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:40:32,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:40:32,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:40:32,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:40:32,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:40:32,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:40:32,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:40:32,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:40:32,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:40:32,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:40:32,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:40:32,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:40:32,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:40:32,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 12:40:32,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:40:32,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:40:32,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:40:32,616 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 12:40:32,643 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:40:32,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:40:32,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:40:32,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:40:32,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:40:32,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:40:32,647 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:40:32,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:40:32,648 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:40:32,648 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:40:32,648 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:40:32,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:40:32,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:40:32,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:40:32,649 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:40:32,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:40:32,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:40:32,649 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:40:32,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:40:32,650 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:40:32,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:40:32,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:40:32,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:40:32,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:40:32,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:40:32,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:40:32,651 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:40:32,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:40:32,651 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:40:32,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:40:32,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:40:32,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:40:32,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:40:32,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:40:32,652 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:40:32,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:40:32,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:40:32,652 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:40:32,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:40:32,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:40:32,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:40:32,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:40:32,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:40:32,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:40:32,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:40:32,902 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:40:32,903 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:40:32,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 12:40:34,130 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:40:34,594 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:40:34,595 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 12:40:34,638 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737c61251/bc932c82cd214611b3e6c040778a084b/FLAG78beff5b4 [2023-04-01 12:40:34,655 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737c61251/bc932c82cd214611b3e6c040778a084b [2023-04-01 12:40:34,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:40:34,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:40:34,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:40:34,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:40:34,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:40:34,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:40:34" (1/1) ... [2023-04-01 12:40:34,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f60d387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:34, skipping insertion in model container [2023-04-01 12:40:34,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:40:34" (1/1) ... [2023-04-01 12:40:34,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:40:34,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:40:35,292 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2023-04-01 12:40:36,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:40:36,332 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:40:36,414 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2023-04-01 12:40:37,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:40:37,196 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:40:37,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37 WrapperNode [2023-04-01 12:40:37,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:40:37,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:40:37,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:40:37,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:40:37,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (1/1) ... [2023-04-01 12:40:37,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (1/1) ... [2023-04-01 12:40:37,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (1/1) ... [2023-04-01 12:40:37,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (1/1) ... [2023-04-01 12:40:37,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (1/1) ... [2023-04-01 12:40:37,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (1/1) ... [2023-04-01 12:40:37,468 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (1/1) ... [2023-04-01 12:40:37,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (1/1) ... [2023-04-01 12:40:37,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:40:37,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:40:37,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:40:37,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:40:37,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (1/1) ... [2023-04-01 12:40:37,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:40:37,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:40:37,565 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 12:40:37,582 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 12:40:37,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:40:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:40:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:40:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 12:40:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:40:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:40:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:40:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:40:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:40:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:40:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:40:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 12:40:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:40:37,608 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 12:40:37,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:40:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:40:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:40:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:40:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:40:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:40:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:40:38,261 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:40:38,265 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:40:44,140 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:40:44,786 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:40:44,786 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 12:40:44,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:40:44 BoogieIcfgContainer [2023-04-01 12:40:44,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:40:44,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:40:44,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:40:44,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:40:44,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:40:34" (1/3) ... [2023-04-01 12:40:44,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1887d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:40:44, skipping insertion in model container [2023-04-01 12:40:44,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:40:37" (2/3) ... [2023-04-01 12:40:44,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1887d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:40:44, skipping insertion in model container [2023-04-01 12:40:44,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:40:44" (3/3) ... [2023-04-01 12:40:44,799 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 12:40:44,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:40:44,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:40:44,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:40:44,905 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;@45f5832f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:40:44,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:40:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 2821 states, 2815 states have (on average 1.911190053285968) internal successors, (5380), 2816 states have internal predecessors, (5380), 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 12:40:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 12:40:44,948 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:44,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:40:44,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:40:44,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:44,954 INFO L85 PathProgramCache]: Analyzing trace with hash -847438343, now seen corresponding path program 1 times [2023-04-01 12:40:44,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:44,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965386585] [2023-04-01 12:40:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:46,038 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 12:40:46,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:46,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965386585] [2023-04-01 12:40:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965386585] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:46,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:46,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:40:46,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249215472] [2023-04-01 12:40:46,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:46,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:40:46,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:46,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:40:46,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:40:46,088 INFO L87 Difference]: Start difference. First operand has 2821 states, 2815 states have (on average 1.911190053285968) internal successors, (5380), 2816 states have internal predecessors, (5380), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:46,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:46,591 INFO L93 Difference]: Finished difference Result 3255 states and 6103 transitions. [2023-04-01 12:40:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:40:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 12:40:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:46,620 INFO L225 Difference]: With dead ends: 3255 [2023-04-01 12:40:46,620 INFO L226 Difference]: Without dead ends: 3032 [2023-04-01 12:40:46,626 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 12:40:46,630 INFO L413 NwaCegarLoop]: 5385 mSDtfsCounter, 2637 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 8377 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:46,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2637 Valid, 8377 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:40:46,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2023-04-01 12:40:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 3030. [2023-04-01 12:40:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3026 states have (on average 1.2729676140118968) internal successors, (3852), 3026 states have internal predecessors, (3852), 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 12:40:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3855 transitions. [2023-04-01 12:40:46,796 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3855 transitions. Word has length 81 [2023-04-01 12:40:46,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:46,797 INFO L495 AbstractCegarLoop]: Abstraction has 3030 states and 3855 transitions. [2023-04-01 12:40:46,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3855 transitions. [2023-04-01 12:40:46,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 12:40:46,808 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:46,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:40:46,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:40:46,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:40:46,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 878278385, now seen corresponding path program 1 times [2023-04-01 12:40:46,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:46,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972277551] [2023-04-01 12:40:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:46,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:47,421 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 12:40:47,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972277551] [2023-04-01 12:40:47,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972277551] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:47,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:47,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:40:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998552337] [2023-04-01 12:40:47,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:47,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:40:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:40:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:40:47,426 INFO L87 Difference]: Start difference. First operand 3030 states and 3855 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:48,740 INFO L93 Difference]: Finished difference Result 4670 states and 6065 transitions. [2023-04-01 12:40:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:40:48,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 12:40:48,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:48,750 INFO L225 Difference]: With dead ends: 4670 [2023-04-01 12:40:48,751 INFO L226 Difference]: Without dead ends: 2530 [2023-04-01 12:40:48,756 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 12:40:48,757 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 7975 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7975 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:48,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7975 Valid, 1730 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 12:40:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2023-04-01 12:40:48,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2528. [2023-04-01 12:40:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2524 states have (on average 1.3050713153724247) internal successors, (3294), 2524 states have internal predecessors, (3294), 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 12:40:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3297 transitions. [2023-04-01 12:40:48,918 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 3297 transitions. Word has length 81 [2023-04-01 12:40:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:48,920 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 3297 transitions. [2023-04-01 12:40:48,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 3297 transitions. [2023-04-01 12:40:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 12:40:48,926 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:48,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:40:48,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:40:48,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:40:48,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:48,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1215718780, now seen corresponding path program 1 times [2023-04-01 12:40:48,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:48,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736733606] [2023-04-01 12:40:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:48,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:49,415 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 12:40:49,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736733606] [2023-04-01 12:40:49,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736733606] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:49,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:40:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774296791] [2023-04-01 12:40:49,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:49,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:40:49,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:40:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:40:49,419 INFO L87 Difference]: Start difference. First operand 2528 states and 3297 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:50,507 INFO L93 Difference]: Finished difference Result 4393 states and 5882 transitions. [2023-04-01 12:40:50,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:40:50,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-01 12:40:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:50,518 INFO L225 Difference]: With dead ends: 4393 [2023-04-01 12:40:50,518 INFO L226 Difference]: Without dead ends: 2515 [2023-04-01 12:40:50,522 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 12:40:50,524 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 5979 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5979 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:50,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5979 Valid, 1296 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:40:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-04-01 12:40:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2513. [2023-04-01 12:40:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2509 states have (on average 1.3411717815862894) internal successors, (3365), 2509 states have internal predecessors, (3365), 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 12:40:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3368 transitions. [2023-04-01 12:40:50,660 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3368 transitions. Word has length 82 [2023-04-01 12:40:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:50,660 INFO L495 AbstractCegarLoop]: Abstraction has 2513 states and 3368 transitions. [2023-04-01 12:40:50,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3368 transitions. [2023-04-01 12:40:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 12:40:50,666 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:50,666 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] [2023-04-01 12:40:50,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:40:50,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:40:50,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:50,668 INFO L85 PathProgramCache]: Analyzing trace with hash 158376049, now seen corresponding path program 1 times [2023-04-01 12:40:50,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:50,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219813818] [2023-04-01 12:40:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:50,994 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 12:40:50,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:50,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219813818] [2023-04-01 12:40:50,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219813818] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:50,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:50,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:40:50,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140808401] [2023-04-01 12:40:50,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:50,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:40:50,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:50,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:40:50,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:40:50,997 INFO L87 Difference]: Start difference. First operand 2513 states and 3368 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 12:40:51,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:51,252 INFO L93 Difference]: Finished difference Result 4814 states and 6597 transitions. [2023-04-01 12:40:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:40:51,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 83 [2023-04-01 12:40:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:51,269 INFO L225 Difference]: With dead ends: 4814 [2023-04-01 12:40:51,269 INFO L226 Difference]: Without dead ends: 3830 [2023-04-01 12:40:51,274 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 12:40:51,282 INFO L413 NwaCegarLoop]: 2528 mSDtfsCounter, 1607 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:51,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 3676 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:40:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2023-04-01 12:40:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3828. [2023-04-01 12:40:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3824 states have (on average 1.3446652719665273) internal successors, (5142), 3824 states have internal predecessors, (5142), 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 12:40:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 5145 transitions. [2023-04-01 12:40:51,508 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 5145 transitions. Word has length 83 [2023-04-01 12:40:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:51,509 INFO L495 AbstractCegarLoop]: Abstraction has 3828 states and 5145 transitions. [2023-04-01 12:40:51,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 12:40:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 5145 transitions. [2023-04-01 12:40:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 12:40:51,518 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:51,518 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] [2023-04-01 12:40:51,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:40:51,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:40:51,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1525018141, now seen corresponding path program 1 times [2023-04-01 12:40:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:51,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890921743] [2023-04-01 12:40:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:51,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:51,897 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 12:40:51,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890921743] [2023-04-01 12:40:51,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890921743] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:51,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:51,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:40:51,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58655926] [2023-04-01 12:40:51,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:51,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:40:51,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:51,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:40:51,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:40:51,902 INFO L87 Difference]: Start difference. First operand 3828 states and 5145 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 12:40:53,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:53,190 INFO L93 Difference]: Finished difference Result 7378 states and 10085 transitions. [2023-04-01 12:40:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:40:53,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 83 [2023-04-01 12:40:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:53,211 INFO L225 Difference]: With dead ends: 7378 [2023-04-01 12:40:53,211 INFO L226 Difference]: Without dead ends: 4764 [2023-04-01 12:40:53,219 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 12:40:53,220 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 5028 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:53,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5028 Valid, 1024 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:40:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2023-04-01 12:40:53,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 4762. [2023-04-01 12:40:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 4758 states have (on average 1.335855401429172) internal successors, (6356), 4758 states have internal predecessors, (6356), 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 12:40:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 6359 transitions. [2023-04-01 12:40:53,581 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 6359 transitions. Word has length 83 [2023-04-01 12:40:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:53,582 INFO L495 AbstractCegarLoop]: Abstraction has 4762 states and 6359 transitions. [2023-04-01 12:40:53,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 12:40:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 6359 transitions. [2023-04-01 12:40:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 12:40:53,591 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:53,591 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] [2023-04-01 12:40:53,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:40:53,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:40:53,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1156538848, now seen corresponding path program 1 times [2023-04-01 12:40:53,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:53,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759922494] [2023-04-01 12:40:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:53,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:53,823 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 12:40:53,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:53,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759922494] [2023-04-01 12:40:53,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759922494] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:53,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:53,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:40:53,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936262689] [2023-04-01 12:40:53,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:53,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:40:53,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:40:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:40:53,825 INFO L87 Difference]: Start difference. First operand 4762 states and 6359 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 12:40:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:54,560 INFO L93 Difference]: Finished difference Result 9624 states and 13331 transitions. [2023-04-01 12:40:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:40:54,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 83 [2023-04-01 12:40:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:54,590 INFO L225 Difference]: With dead ends: 9624 [2023-04-01 12:40:54,591 INFO L226 Difference]: Without dead ends: 7275 [2023-04-01 12:40:54,599 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 12:40:54,601 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 853 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:54,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 2568 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:40:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2023-04-01 12:40:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 7273. [2023-04-01 12:40:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7273 states, 7269 states have (on average 1.3589214472417113) internal successors, (9878), 7269 states have internal predecessors, (9878), 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 12:40:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 9881 transitions. [2023-04-01 12:40:55,288 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 9881 transitions. Word has length 83 [2023-04-01 12:40:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:55,289 INFO L495 AbstractCegarLoop]: Abstraction has 7273 states and 9881 transitions. [2023-04-01 12:40:55,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 12:40:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 9881 transitions. [2023-04-01 12:40:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 12:40:55,299 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:55,299 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] [2023-04-01 12:40:55,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:40:55,300 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:40:55,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1401305766, now seen corresponding path program 1 times [2023-04-01 12:40:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:55,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55224579] [2023-04-01 12:40:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:55,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:55,541 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 12:40:55,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:55,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55224579] [2023-04-01 12:40:55,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55224579] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:55,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:55,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:40:55,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611739441] [2023-04-01 12:40:55,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:55,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:40:55,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:55,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:40:55,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:40:55,543 INFO L87 Difference]: Start difference. First operand 7273 states and 9881 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 12:40:56,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:56,654 INFO L93 Difference]: Finished difference Result 16675 states and 23110 transitions. [2023-04-01 12:40:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:40:56,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 83 [2023-04-01 12:40:56,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:56,702 INFO L225 Difference]: With dead ends: 16675 [2023-04-01 12:40:56,703 INFO L226 Difference]: Without dead ends: 11790 [2023-04-01 12:40:56,716 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 12:40:56,717 INFO L413 NwaCegarLoop]: 2199 mSDtfsCounter, 1404 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:56,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 3219 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:40:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11790 states. [2023-04-01 12:40:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11790 to 11788. [2023-04-01 12:40:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11788 states, 11784 states have (on average 1.363713509843856) internal successors, (16070), 11784 states have internal predecessors, (16070), 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 12:40:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11788 states to 11788 states and 16073 transitions. [2023-04-01 12:40:57,802 INFO L78 Accepts]: Start accepts. Automaton has 11788 states and 16073 transitions. Word has length 83 [2023-04-01 12:40:57,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:57,803 INFO L495 AbstractCegarLoop]: Abstraction has 11788 states and 16073 transitions. [2023-04-01 12:40:57,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 12:40:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 11788 states and 16073 transitions. [2023-04-01 12:40:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 12:40:57,818 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:57,818 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] [2023-04-01 12:40:57,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:40:57,818 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:40:57,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1643493318, now seen corresponding path program 1 times [2023-04-01 12:40:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:57,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685021372] [2023-04-01 12:40:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:57,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:58,235 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 12:40:58,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685021372] [2023-04-01 12:40:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685021372] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:58,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:58,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:40:58,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218869839] [2023-04-01 12:40:58,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:58,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:40:58,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:40:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:40:58,241 INFO L87 Difference]: Start difference. First operand 11788 states and 16073 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 12:41:00,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:41:00,685 INFO L93 Difference]: Finished difference Result 28962 states and 40268 transitions. [2023-04-01 12:41:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:41:00,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 83 [2023-04-01 12:41:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:41:00,740 INFO L225 Difference]: With dead ends: 28962 [2023-04-01 12:41:00,740 INFO L226 Difference]: Without dead ends: 18448 [2023-04-01 12:41:00,763 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 12:41:00,764 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 4437 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:41:00,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 956 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:41:00,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18448 states. [2023-04-01 12:41:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18448 to 18446. [2023-04-01 12:41:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18446 states, 18442 states have (on average 1.3841774211040017) internal successors, (25527), 18442 states have internal predecessors, (25527), 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 12:41:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 25530 transitions. [2023-04-01 12:41:02,772 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 25530 transitions. Word has length 83 [2023-04-01 12:41:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:41:02,772 INFO L495 AbstractCegarLoop]: Abstraction has 18446 states and 25530 transitions. [2023-04-01 12:41:02,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 12:41:02,772 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 25530 transitions. [2023-04-01 12:41:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 12:41:02,788 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:41:02,788 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] [2023-04-01 12:41:02,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:41:02,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:41:02,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:41:02,789 INFO L85 PathProgramCache]: Analyzing trace with hash -581288455, now seen corresponding path program 1 times [2023-04-01 12:41:02,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:41:02,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114126913] [2023-04-01 12:41:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:41:02,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:41:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:41:03,141 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 12:41:03,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:41:03,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114126913] [2023-04-01 12:41:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114126913] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:41:03,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:41:03,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:41:03,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654832180] [2023-04-01 12:41:03,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:41:03,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:41:03,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:41:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:41:03,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:41:03,147 INFO L87 Difference]: Start difference. First operand 18446 states and 25530 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 12:41:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:41:06,515 INFO L93 Difference]: Finished difference Result 50589 states and 70819 transitions. [2023-04-01 12:41:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:41:06,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 84 [2023-04-01 12:41:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:41:06,625 INFO L225 Difference]: With dead ends: 50589 [2023-04-01 12:41:06,625 INFO L226 Difference]: Without dead ends: 32760 [2023-04-01 12:41:06,669 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 12:41:06,671 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 3600 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:41:06,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3600 Valid, 851 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 12:41:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32760 states. [2023-04-01 12:41:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32760 to 32758. [2023-04-01 12:41:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32758 states, 32754 states have (on average 1.3882884533186786) internal successors, (45472), 32754 states have internal predecessors, (45472), 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 12:41:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32758 states to 32758 states and 45475 transitions. [2023-04-01 12:41:09,840 INFO L78 Accepts]: Start accepts. Automaton has 32758 states and 45475 transitions. Word has length 84 [2023-04-01 12:41:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:41:09,840 INFO L495 AbstractCegarLoop]: Abstraction has 32758 states and 45475 transitions. [2023-04-01 12:41:09,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 12:41:09,840 INFO L276 IsEmpty]: Start isEmpty. Operand 32758 states and 45475 transitions. [2023-04-01 12:41:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 12:41:09,859 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:41:09,860 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] [2023-04-01 12:41:09,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 12:41:09,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:41:09,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:41:09,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1768300821, now seen corresponding path program 1 times [2023-04-01 12:41:09,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:41:09,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165978132] [2023-04-01 12:41:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:41:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:41:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:41:10,107 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 12:41:10,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:41:10,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165978132] [2023-04-01 12:41:10,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165978132] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:41:10,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:41:10,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:41:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291915997] [2023-04-01 12:41:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:41:10,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:41:10,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:41:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:41:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:41:10,109 INFO L87 Difference]: Start difference. First operand 32758 states and 45475 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 12:41:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:41:15,521 INFO L93 Difference]: Finished difference Result 90027 states and 125272 transitions. [2023-04-01 12:41:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:41:15,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 85 [2023-04-01 12:41:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:41:15,731 INFO L225 Difference]: With dead ends: 90027 [2023-04-01 12:41:15,731 INFO L226 Difference]: Without dead ends: 58538 [2023-04-01 12:41:15,794 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 12:41:15,795 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 867 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:41:15,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2123 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:41:15,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58538 states. [2023-04-01 12:41:21,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58538 to 58536. [2023-04-01 12:41:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58536 states, 58532 states have (on average 1.3792113715574386) internal successors, (80728), 58532 states have internal predecessors, (80728), 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 12:41:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58536 states to 58536 states and 80731 transitions. [2023-04-01 12:41:21,657 INFO L78 Accepts]: Start accepts. Automaton has 58536 states and 80731 transitions. Word has length 85 [2023-04-01 12:41:21,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:41:21,658 INFO L495 AbstractCegarLoop]: Abstraction has 58536 states and 80731 transitions. [2023-04-01 12:41:21,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 12:41:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 58536 states and 80731 transitions. [2023-04-01 12:41:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 12:41:21,694 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:41:21,695 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] [2023-04-01 12:41:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 12:41:21,695 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:41:21,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:41:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash -634181116, now seen corresponding path program 1 times [2023-04-01 12:41:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:41:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396945551] [2023-04-01 12:41:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:41:21,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:41:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:41:22,257 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 12:41:22,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:41:22,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396945551] [2023-04-01 12:41:22,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396945551] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:41:22,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:41:22,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:41:22,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821058754] [2023-04-01 12:41:22,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:41:22,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:41:22,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:41:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:41:22,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:41:22,259 INFO L87 Difference]: Start difference. First operand 58536 states and 80731 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 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)