/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:34:56,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:34:56,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:34:56,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:34:56,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:34:56,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:34:56,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:34:56,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:34:56,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:34:56,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:34:56,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:34:56,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:34:56,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:34:56,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:34:56,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:34:56,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:34:56,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:34:56,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:34:56,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:34:56,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:34:56,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:34:56,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:34:56,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:34:56,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:34:56,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:34:56,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:34:56,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:34:56,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:34:56,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:34:56,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:34:56,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:34:56,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:34:56,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:34:56,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:34:56,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:34:56,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:34:56,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:34:56,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:34:56,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:34:56,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:34:56,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:34:56,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:34:56,179 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:34:56,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:34:56,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:34:56,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:34:56,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:34:56,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:34:56,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:34:56,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:34:56,181 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:34:56,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:34:56,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:34:56,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:34:56,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:34:56,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:34:56,183 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:34:56,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:34:56,183 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:34:56,183 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:34:56,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:34:56,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:34:56,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:34:56,369 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:34:56,369 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:34:56,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-04-02 06:34:57,429 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:34:57,608 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:34:57,609 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-04-02 06:34:57,615 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66df72437/9c8a72d282794ae1a3160657bbfd9960/FLAGcb07aae56 [2023-04-02 06:34:57,632 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66df72437/9c8a72d282794ae1a3160657bbfd9960 [2023-04-02 06:34:57,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:34:57,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:34:57,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:34:57,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:34:57,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:34:57,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:34:57" (1/1) ... [2023-04-02 06:34:57,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142fba83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:57, skipping insertion in model container [2023-04-02 06:34:57,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:34:57" (1/1) ... [2023-04-02 06:34:57,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:34:57,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:34:57,836 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.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[7979,7992] [2023-04-02 06:34:57,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:34:57,911 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:34:57,968 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.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[7979,7992] [2023-04-02 06:34:57,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:34:58,007 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:34:58,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58 WrapperNode [2023-04-02 06:34:58,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:34:58,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:34:58,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:34:58,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:34:58,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (1/1) ... [2023-04-02 06:34:58,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (1/1) ... [2023-04-02 06:34:58,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (1/1) ... [2023-04-02 06:34:58,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (1/1) ... [2023-04-02 06:34:58,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (1/1) ... [2023-04-02 06:34:58,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (1/1) ... [2023-04-02 06:34:58,056 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (1/1) ... [2023-04-02 06:34:58,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (1/1) ... [2023-04-02 06:34:58,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:34:58,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:34:58,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:34:58,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:34:58,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (1/1) ... [2023-04-02 06:34:58,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:34:58,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:34:58,110 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) [2023-04-02 06:34:58,112 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 [2023-04-02 06:34:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:34:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:34:58,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:34:58,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:34:58,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:34:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:34:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:34:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:34:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:34:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:34:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:34:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:34:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:34:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:34:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:34:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:34:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:34:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:34:58,254 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:34:58,255 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:34:58,808 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:34:58,814 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:34:58,814 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:34:58,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:34:58 BoogieIcfgContainer [2023-04-02 06:34:58,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:34:58,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:34:58,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:34:58,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:34:58,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:34:57" (1/3) ... [2023-04-02 06:34:58,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42be3b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:34:58, skipping insertion in model container [2023-04-02 06:34:58,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:34:58" (2/3) ... [2023-04-02 06:34:58,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42be3b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:34:58, skipping insertion in model container [2023-04-02 06:34:58,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:34:58" (3/3) ... [2023-04-02 06:34:58,823 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-04-02 06:34:58,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:34:58,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:34:58,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:34:58,904 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=PETRI_NET, 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;@49f9db7d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:34:58,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:34:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 149 states have (on average 1.7516778523489933) internal successors, (261), 151 states have internal predecessors, (261), 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) [2023-04-02 06:34:58,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 06:34:58,914 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:58,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:58,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:58,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1685609969, now seen corresponding path program 1 times [2023-04-02 06:34:58,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:58,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857813011] [2023-04-02 06:34:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:58,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:59,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:59,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:59,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857813011] [2023-04-02 06:34:59,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857813011] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:59,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:59,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:34:59,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567800478] [2023-04-02 06:34:59,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:59,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:34:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:59,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:34:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:34:59,742 INFO L87 Difference]: Start difference. First operand has 156 states, 149 states have (on average 1.7516778523489933) internal successors, (261), 151 states have internal predecessors, (261), 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 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 1 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) [2023-04-02 06:35:00,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:00,786 INFO L93 Difference]: Finished difference Result 871 states and 1370 transitions. [2023-04-02 06:35:00,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:35:00,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2023-04-02 06:35:00,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:00,797 INFO L225 Difference]: With dead ends: 871 [2023-04-02 06:35:00,797 INFO L226 Difference]: Without dead ends: 745 [2023-04-02 06:35:00,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:35:00,802 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1674 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:00,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 2359 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:35:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2023-04-02 06:35:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 229. [2023-04-02 06:35:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 225 states have (on average 1.44) internal successors, (324), 225 states have internal predecessors, (324), 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) [2023-04-02 06:35:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 327 transitions. [2023-04-02 06:35:00,890 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 327 transitions. Word has length 80 [2023-04-02 06:35:00,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:00,891 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 327 transitions. [2023-04-02 06:35:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 1 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) [2023-04-02 06:35:00,891 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 327 transitions. [2023-04-02 06:35:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:35:00,894 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:00,894 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] [2023-04-02 06:35:00,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:35:00,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:00,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:00,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1262104596, now seen corresponding path program 1 times [2023-04-02 06:35:00,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:00,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897992314] [2023-04-02 06:35:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:00,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:01,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:01,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897992314] [2023-04-02 06:35:01,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897992314] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:01,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:01,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:35:01,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143058304] [2023-04-02 06:35:01,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:01,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:01,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:01,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:01,297 INFO L87 Difference]: Start difference. First operand 229 states and 327 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:02,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:02,096 INFO L93 Difference]: Finished difference Result 913 states and 1391 transitions. [2023-04-02 06:35:02,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:35:02,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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 [2023-04-02 06:35:02,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:02,101 INFO L225 Difference]: With dead ends: 913 [2023-04-02 06:35:02,103 INFO L226 Difference]: Without dead ends: 795 [2023-04-02 06:35:02,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:35:02,114 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1003 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:02,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1233 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:35:02,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-04-02 06:35:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 282. [2023-04-02 06:35:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 278 states have (on average 1.4640287769784173) internal successors, (407), 278 states have internal predecessors, (407), 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) [2023-04-02 06:35:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 410 transitions. [2023-04-02 06:35:02,154 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 410 transitions. Word has length 82 [2023-04-02 06:35:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:02,156 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 410 transitions. [2023-04-02 06:35:02,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 410 transitions. [2023-04-02 06:35:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:35:02,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:02,161 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] [2023-04-02 06:35:02,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:35:02,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:02,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:02,161 INFO L85 PathProgramCache]: Analyzing trace with hash 705831863, now seen corresponding path program 1 times [2023-04-02 06:35:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031379941] [2023-04-02 06:35:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:02,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:02,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:02,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:02,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031379941] [2023-04-02 06:35:02,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031379941] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:02,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:02,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:35:02,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374467897] [2023-04-02 06:35:02,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:02,437 INFO L87 Difference]: Start difference. First operand 282 states and 410 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:03,061 INFO L93 Difference]: Finished difference Result 987 states and 1507 transitions. [2023-04-02 06:35:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:35:03,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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 [2023-04-02 06:35:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:03,066 INFO L225 Difference]: With dead ends: 987 [2023-04-02 06:35:03,066 INFO L226 Difference]: Without dead ends: 869 [2023-04-02 06:35:03,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:35:03,073 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1367 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:03,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 1047 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:35:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2023-04-02 06:35:03,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 425. [2023-04-02 06:35:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 421 states have (on average 1.498812351543943) internal successors, (631), 421 states have internal predecessors, (631), 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) [2023-04-02 06:35:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 634 transitions. [2023-04-02 06:35:03,119 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 634 transitions. Word has length 82 [2023-04-02 06:35:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:03,119 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 634 transitions. [2023-04-02 06:35:03,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 634 transitions. [2023-04-02 06:35:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:35:03,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:03,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:03,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:35:03,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:03,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:03,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1278775763, now seen corresponding path program 1 times [2023-04-02 06:35:03,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:03,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972979276] [2023-04-02 06:35:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:03,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:03,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:03,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972979276] [2023-04-02 06:35:03,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972979276] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:03,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:03,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:35:03,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712048282] [2023-04-02 06:35:03,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:03,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:03,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:03,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:03,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:03,486 INFO L87 Difference]: Start difference. First operand 425 states and 634 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:04,000 INFO L93 Difference]: Finished difference Result 835 states and 1274 transitions. [2023-04-02 06:35:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:35:04,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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 [2023-04-02 06:35:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:04,003 INFO L225 Difference]: With dead ends: 835 [2023-04-02 06:35:04,003 INFO L226 Difference]: Without dead ends: 543 [2023-04-02 06:35:04,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:35:04,008 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 140 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:04,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 804 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:35:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-04-02 06:35:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2023-04-02 06:35:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 537 states have (on average 1.5065176908752327) internal successors, (809), 537 states have internal predecessors, (809), 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) [2023-04-02 06:35:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 812 transitions. [2023-04-02 06:35:04,071 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 812 transitions. Word has length 82 [2023-04-02 06:35:04,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:04,072 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 812 transitions. [2023-04-02 06:35:04,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:04,072 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 812 transitions. [2023-04-02 06:35:04,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:35:04,076 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:04,076 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] [2023-04-02 06:35:04,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:35:04,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:04,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:04,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1483767634, now seen corresponding path program 1 times [2023-04-02 06:35:04,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:04,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207823789] [2023-04-02 06:35:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:04,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:04,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207823789] [2023-04-02 06:35:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207823789] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:04,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:04,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:35:04,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461219678] [2023-04-02 06:35:04,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:04,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:35:04,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:04,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:35:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:35:04,214 INFO L87 Difference]: Start difference. First operand 541 states and 812 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:04,528 INFO L93 Difference]: Finished difference Result 953 states and 1451 transitions. [2023-04-02 06:35:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:35:04,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 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 [2023-04-02 06:35:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:04,530 INFO L225 Difference]: With dead ends: 953 [2023-04-02 06:35:04,530 INFO L226 Difference]: Without dead ends: 538 [2023-04-02 06:35:04,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:35:04,532 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:04,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 396 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:35:04,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-04-02 06:35:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2023-04-02 06:35:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 534 states have (on average 1.49625468164794) internal successors, (799), 534 states have internal predecessors, (799), 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) [2023-04-02 06:35:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 802 transitions. [2023-04-02 06:35:04,595 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 802 transitions. Word has length 82 [2023-04-02 06:35:04,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:04,595 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 802 transitions. [2023-04-02 06:35:04,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:04,596 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 802 transitions. [2023-04-02 06:35:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:35:04,596 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:04,596 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] [2023-04-02 06:35:04,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:35:04,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:04,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1753703232, now seen corresponding path program 1 times [2023-04-02 06:35:04,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:04,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955321988] [2023-04-02 06:35:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:04,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:04,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:04,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955321988] [2023-04-02 06:35:04,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955321988] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:04,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:04,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:35:04,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204953759] [2023-04-02 06:35:04,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:04,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:04,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:04,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:04,804 INFO L87 Difference]: Start difference. First operand 538 states and 802 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:05,585 INFO L93 Difference]: Finished difference Result 1154 states and 1747 transitions. [2023-04-02 06:35:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:35:05,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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 [2023-04-02 06:35:05,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:05,589 INFO L225 Difference]: With dead ends: 1154 [2023-04-02 06:35:05,589 INFO L226 Difference]: Without dead ends: 1037 [2023-04-02 06:35:05,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:35:05,590 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1038 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:05,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1195 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:35:05,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-04-02 06:35:05,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 654. [2023-04-02 06:35:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 650 states have (on average 1.5046153846153847) internal successors, (978), 650 states have internal predecessors, (978), 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) [2023-04-02 06:35:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 981 transitions. [2023-04-02 06:35:05,638 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 981 transitions. Word has length 82 [2023-04-02 06:35:05,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:05,638 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 981 transitions. [2023-04-02 06:35:05,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 981 transitions. [2023-04-02 06:35:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:35:05,639 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:05,639 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] [2023-04-02 06:35:05,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:35:05,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:05,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1537091882, now seen corresponding path program 1 times [2023-04-02 06:35:05,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:05,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710136285] [2023-04-02 06:35:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:05,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:05,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:05,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710136285] [2023-04-02 06:35:05,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710136285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:05,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:05,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:35:05,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681166726] [2023-04-02 06:35:05,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:05,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:05,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:05,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:05,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:05,874 INFO L87 Difference]: Start difference. First operand 654 states and 981 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:06,623 INFO L93 Difference]: Finished difference Result 1275 states and 1934 transitions. [2023-04-02 06:35:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:35:06,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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 [2023-04-02 06:35:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:06,627 INFO L225 Difference]: With dead ends: 1275 [2023-04-02 06:35:06,627 INFO L226 Difference]: Without dead ends: 1158 [2023-04-02 06:35:06,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:35:06,629 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 986 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:06,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1478 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:35:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2023-04-02 06:35:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 780. [2023-04-02 06:35:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 776 states have (on average 1.5115979381443299) internal successors, (1173), 776 states have internal predecessors, (1173), 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) [2023-04-02 06:35:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1176 transitions. [2023-04-02 06:35:06,702 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1176 transitions. Word has length 82 [2023-04-02 06:35:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:06,702 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1176 transitions. [2023-04-02 06:35:06,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1176 transitions. [2023-04-02 06:35:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:35:06,703 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:06,703 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] [2023-04-02 06:35:06,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:35:06,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:06,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1663259103, now seen corresponding path program 1 times [2023-04-02 06:35:06,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:06,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167997293] [2023-04-02 06:35:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:06,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:06,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:06,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:06,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167997293] [2023-04-02 06:35:06,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167997293] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:06,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:06,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:35:06,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004760970] [2023-04-02 06:35:06,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:06,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:06,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:06,944 INFO L87 Difference]: Start difference. First operand 780 states and 1176 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:07,688 INFO L93 Difference]: Finished difference Result 1401 states and 2129 transitions. [2023-04-02 06:35:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:35:07,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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 [2023-04-02 06:35:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:07,692 INFO L225 Difference]: With dead ends: 1401 [2023-04-02 06:35:07,692 INFO L226 Difference]: Without dead ends: 1284 [2023-04-02 06:35:07,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:35:07,693 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1152 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:07,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1370 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:35:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2023-04-02 06:35:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 911. [2023-04-02 06:35:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.5170893054024255) internal successors, (1376), 907 states have internal predecessors, (1376), 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) [2023-04-02 06:35:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1379 transitions. [2023-04-02 06:35:07,773 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1379 transitions. Word has length 82 [2023-04-02 06:35:07,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:07,773 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1379 transitions. [2023-04-02 06:35:07,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 1 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) [2023-04-02 06:35:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1379 transitions. [2023-04-02 06:35:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:35:07,774 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:07,774 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] [2023-04-02 06:35:07,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:35:07,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:07,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash -989252265, now seen corresponding path program 1 times [2023-04-02 06:35:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:07,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905917453] [2023-04-02 06:35:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905917453] [2023-04-02 06:35:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905917453] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:07,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:07,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:35:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106143373] [2023-04-02 06:35:07,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:07,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:35:07,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:35:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:35:07,995 INFO L87 Difference]: Start difference. First operand 911 states and 1379 transitions. Second operand has 6 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) [2023-04-02 06:35:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:08,478 INFO L93 Difference]: Finished difference Result 1776 states and 2710 transitions. [2023-04-02 06:35:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:35:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 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 [2023-04-02 06:35:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:08,481 INFO L225 Difference]: With dead ends: 1776 [2023-04-02 06:35:08,481 INFO L226 Difference]: Without dead ends: 911 [2023-04-02 06:35:08,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:35:08,483 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 533 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:08,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 120 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:35:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2023-04-02 06:35:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2023-04-02 06:35:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.5016538037486218) internal successors, (1362), 907 states have internal predecessors, (1362), 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) [2023-04-02 06:35:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1365 transitions. [2023-04-02 06:35:08,562 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1365 transitions. Word has length 83 [2023-04-02 06:35:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:08,562 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1365 transitions. [2023-04-02 06:35:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2023-04-02 06:35:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1365 transitions. [2023-04-02 06:35:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:35:08,563 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:08,563 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] [2023-04-02 06:35:08,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:35:08,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:08,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash 121937332, now seen corresponding path program 1 times [2023-04-02 06:35:08,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:08,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168492885] [2023-04-02 06:35:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:08,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:08,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168492885] [2023-04-02 06:35:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168492885] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:08,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:08,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:35:08,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005113320] [2023-04-02 06:35:08,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:08,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:35:08,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:35:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:35:08,782 INFO L87 Difference]: Start difference. First operand 911 states and 1365 transitions. Second operand has 6 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) [2023-04-02 06:35:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:09,333 INFO L93 Difference]: Finished difference Result 1772 states and 2678 transitions. [2023-04-02 06:35:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:35:09,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 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 [2023-04-02 06:35:09,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:09,337 INFO L225 Difference]: With dead ends: 1772 [2023-04-02 06:35:09,337 INFO L226 Difference]: Without dead ends: 911 [2023-04-02 06:35:09,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:35:09,339 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 515 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:09,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 128 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:35:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2023-04-02 06:35:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2023-04-02 06:35:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.486218302094818) internal successors, (1348), 907 states have internal predecessors, (1348), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1351 transitions. [2023-04-02 06:35:09,427 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1351 transitions. Word has length 84 [2023-04-02 06:35:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:09,427 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1351 transitions. [2023-04-02 06:35:09,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2023-04-02 06:35:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1351 transitions. [2023-04-02 06:35:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:35:09,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:09,428 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] [2023-04-02 06:35:09,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:35:09,428 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:09,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash 338134696, now seen corresponding path program 1 times [2023-04-02 06:35:09,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:09,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611781964] [2023-04-02 06:35:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:09,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:09,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611781964] [2023-04-02 06:35:09,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611781964] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:09,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:09,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:35:09,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947504516] [2023-04-02 06:35:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:09,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:35:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:35:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:35:09,671 INFO L87 Difference]: Start difference. First operand 911 states and 1351 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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) [2023-04-02 06:35:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:10,198 INFO L93 Difference]: Finished difference Result 1768 states and 2646 transitions. [2023-04-02 06:35:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:35:10,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 85 [2023-04-02 06:35:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:10,201 INFO L225 Difference]: With dead ends: 1768 [2023-04-02 06:35:10,201 INFO L226 Difference]: Without dead ends: 911 [2023-04-02 06:35:10,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:35:10,203 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 497 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:10,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 136 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:35:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2023-04-02 06:35:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2023-04-02 06:35:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.4707828004410144) internal successors, (1334), 907 states have internal predecessors, (1334), 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) [2023-04-02 06:35:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1337 transitions. [2023-04-02 06:35:10,322 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1337 transitions. Word has length 85 [2023-04-02 06:35:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:10,322 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1337 transitions. [2023-04-02 06:35:10,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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) [2023-04-02 06:35:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1337 transitions. [2023-04-02 06:35:10,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 06:35:10,323 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:10,323 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] [2023-04-02 06:35:10,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:35:10,324 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:10,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1066273955, now seen corresponding path program 1 times [2023-04-02 06:35:10,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:10,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156404637] [2023-04-02 06:35:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:10,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:10,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156404637] [2023-04-02 06:35:10,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156404637] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:10,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:10,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:35:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611843144] [2023-04-02 06:35:10,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:10,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:35:10,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:10,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:35:10,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:35:10,506 INFO L87 Difference]: Start difference. First operand 911 states and 1337 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 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) [2023-04-02 06:35:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:10,973 INFO L93 Difference]: Finished difference Result 1764 states and 2614 transitions. [2023-04-02 06:35:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:35:10,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 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) Word has length 86 [2023-04-02 06:35:10,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:10,976 INFO L225 Difference]: With dead ends: 1764 [2023-04-02 06:35:10,976 INFO L226 Difference]: Without dead ends: 911 [2023-04-02 06:35:10,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:35:10,978 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 479 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:10,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 144 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:35:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2023-04-02 06:35:11,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2023-04-02 06:35:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.4553472987872105) internal successors, (1320), 907 states have internal predecessors, (1320), 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) [2023-04-02 06:35:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1323 transitions. [2023-04-02 06:35:11,095 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1323 transitions. Word has length 86 [2023-04-02 06:35:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:11,095 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1323 transitions. [2023-04-02 06:35:11,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 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) [2023-04-02 06:35:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1323 transitions. [2023-04-02 06:35:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:35:11,096 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:11,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:11,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:35:11,097 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:11,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1201202041, now seen corresponding path program 1 times [2023-04-02 06:35:11,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:11,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86723346] [2023-04-02 06:35:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:11,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:11,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86723346] [2023-04-02 06:35:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86723346] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:11,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:35:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630689981] [2023-04-02 06:35:11,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:11,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:35:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:35:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:35:11,293 INFO L87 Difference]: Start difference. First operand 911 states and 1323 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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) [2023-04-02 06:35:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:11,758 INFO L93 Difference]: Finished difference Result 1780 states and 2603 transitions. [2023-04-02 06:35:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:35:11,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 87 [2023-04-02 06:35:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:11,761 INFO L225 Difference]: With dead ends: 1780 [2023-04-02 06:35:11,761 INFO L226 Difference]: Without dead ends: 911 [2023-04-02 06:35:11,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:35:11,762 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 520 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:11,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 112 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:35:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2023-04-02 06:35:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2023-04-02 06:35:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.4399117971334068) internal successors, (1306), 907 states have internal predecessors, (1306), 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) [2023-04-02 06:35:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1309 transitions. [2023-04-02 06:35:11,866 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1309 transitions. Word has length 87 [2023-04-02 06:35:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:11,867 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1309 transitions. [2023-04-02 06:35:11,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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) [2023-04-02 06:35:11,867 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1309 transitions. [2023-04-02 06:35:11,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:35:11,867 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:11,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:11,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:35:11,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:11,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash 419587239, now seen corresponding path program 1 times [2023-04-02 06:35:11,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:11,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420463226] [2023-04-02 06:35:11,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:11,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:12,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420463226] [2023-04-02 06:35:12,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420463226] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:12,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:12,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:35:12,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660460125] [2023-04-02 06:35:12,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:12,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:35:12,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:12,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:35:12,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:35:12,133 INFO L87 Difference]: Start difference. First operand 911 states and 1309 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 1 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) [2023-04-02 06:35:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:12,562 INFO L93 Difference]: Finished difference Result 1113 states and 1587 transitions. [2023-04-02 06:35:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:35:12,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 1 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 88 [2023-04-02 06:35:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:12,565 INFO L225 Difference]: With dead ends: 1113 [2023-04-02 06:35:12,565 INFO L226 Difference]: Without dead ends: 1111 [2023-04-02 06:35:12,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:35:12,566 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 162 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:12,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 758 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:35:12,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2023-04-02 06:35:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 911. [2023-04-02 06:35:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.432194046306505) internal successors, (1299), 907 states have internal predecessors, (1299), 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) [2023-04-02 06:35:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1302 transitions. [2023-04-02 06:35:12,687 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1302 transitions. Word has length 88 [2023-04-02 06:35:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:12,688 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1302 transitions. [2023-04-02 06:35:12,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 1 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) [2023-04-02 06:35:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1302 transitions. [2023-04-02 06:35:12,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:35:12,688 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:12,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:12,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:35:12,689 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:12,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:12,689 INFO L85 PathProgramCache]: Analyzing trace with hash -940065374, now seen corresponding path program 1 times [2023-04-02 06:35:12,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:12,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287528870] [2023-04-02 06:35:12,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:12,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:13,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:13,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287528870] [2023-04-02 06:35:13,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287528870] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:13,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:13,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:35:13,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6801961] [2023-04-02 06:35:13,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:13,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 06:35:13,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 06:35:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:35:13,230 INFO L87 Difference]: Start difference. First operand 911 states and 1302 transitions. Second operand has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 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) [2023-04-02 06:35:14,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:14,769 INFO L93 Difference]: Finished difference Result 4119 states and 5900 transitions. [2023-04-02 06:35:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:35:14,769 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 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 89 [2023-04-02 06:35:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:14,778 INFO L225 Difference]: With dead ends: 4119 [2023-04-02 06:35:14,778 INFO L226 Difference]: Without dead ends: 3364 [2023-04-02 06:35:14,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 06:35:14,780 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 1943 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:14,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1943 Valid, 609 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:35:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2023-04-02 06:35:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 956. [2023-04-02 06:35:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 952 states have (on average 1.430672268907563) internal successors, (1362), 952 states have internal predecessors, (1362), 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) [2023-04-02 06:35:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1365 transitions. [2023-04-02 06:35:14,948 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1365 transitions. Word has length 89 [2023-04-02 06:35:14,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:14,948 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1365 transitions. [2023-04-02 06:35:14,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 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) [2023-04-02 06:35:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1365 transitions. [2023-04-02 06:35:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:35:14,949 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:14,949 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:14,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:35:14,949 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:14,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash 895366827, now seen corresponding path program 1 times [2023-04-02 06:35:14,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:14,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423807600] [2023-04-02 06:35:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:14,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:15,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:15,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423807600] [2023-04-02 06:35:15,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423807600] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:15,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:15,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:35:15,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515153077] [2023-04-02 06:35:15,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:15,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 06:35:15,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:15,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 06:35:15,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:35:15,372 INFO L87 Difference]: Start difference. First operand 956 states and 1365 transitions. Second operand has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 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) [2023-04-02 06:35:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:17,255 INFO L93 Difference]: Finished difference Result 4214 states and 6039 transitions. [2023-04-02 06:35:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:35:17,255 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 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 89 [2023-04-02 06:35:17,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:17,277 INFO L225 Difference]: With dead ends: 4214 [2023-04-02 06:35:17,277 INFO L226 Difference]: Without dead ends: 3439 [2023-04-02 06:35:17,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 06:35:17,279 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1548 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:17,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 830 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:35:17,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2023-04-02 06:35:17,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 956. [2023-04-02 06:35:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 952 states have (on average 1.4264705882352942) internal successors, (1358), 952 states have internal predecessors, (1358), 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) [2023-04-02 06:35:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1361 transitions. [2023-04-02 06:35:17,488 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1361 transitions. Word has length 89 [2023-04-02 06:35:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:17,488 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1361 transitions. [2023-04-02 06:35:17,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 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) [2023-04-02 06:35:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1361 transitions. [2023-04-02 06:35:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:35:17,489 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:17,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:17,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:35:17,489 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:17,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:17,490 INFO L85 PathProgramCache]: Analyzing trace with hash 985810956, now seen corresponding path program 1 times [2023-04-02 06:35:17,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:17,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130272672] [2023-04-02 06:35:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:17,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:17,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:17,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130272672] [2023-04-02 06:35:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130272672] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:17,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:35:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046169674] [2023-04-02 06:35:17,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:17,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:35:17,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:35:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:35:17,849 INFO L87 Difference]: Start difference. First operand 956 states and 1361 transitions. Second operand has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 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) [2023-04-02 06:35:18,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:18,920 INFO L93 Difference]: Finished difference Result 2586 states and 3711 transitions. [2023-04-02 06:35:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:35:18,921 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 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 89 [2023-04-02 06:35:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:18,925 INFO L225 Difference]: With dead ends: 2586 [2023-04-02 06:35:18,925 INFO L226 Difference]: Without dead ends: 1805 [2023-04-02 06:35:18,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:35:18,927 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1467 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:18,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 371 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:35:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2023-04-02 06:35:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 956. [2023-04-02 06:35:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 952 states have (on average 1.421218487394958) internal successors, (1353), 952 states have internal predecessors, (1353), 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) [2023-04-02 06:35:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1356 transitions. [2023-04-02 06:35:19,117 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1356 transitions. Word has length 89 [2023-04-02 06:35:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:19,117 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1356 transitions. [2023-04-02 06:35:19,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 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) [2023-04-02 06:35:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1356 transitions. [2023-04-02 06:35:19,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:35:19,117 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:19,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:19,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:35:19,118 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:19,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:19,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1998273610, now seen corresponding path program 1 times [2023-04-02 06:35:19,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:19,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205706437] [2023-04-02 06:35:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:19,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:19,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:19,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205706437] [2023-04-02 06:35:19,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205706437] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:19,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:19,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:35:19,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773177754] [2023-04-02 06:35:19,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:19,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:35:19,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:35:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:35:19,411 INFO L87 Difference]: Start difference. First operand 956 states and 1356 transitions. Second operand has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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) [2023-04-02 06:35:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:20,501 INFO L93 Difference]: Finished difference Result 2555 states and 3668 transitions. [2023-04-02 06:35:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 06:35:20,501 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 89 [2023-04-02 06:35:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:20,505 INFO L225 Difference]: With dead ends: 2555 [2023-04-02 06:35:20,505 INFO L226 Difference]: Without dead ends: 1712 [2023-04-02 06:35:20,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:35:20,507 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 676 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:20,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 415 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:35:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2023-04-02 06:35:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 956. [2023-04-02 06:35:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 952 states have (on average 1.4201680672268908) internal successors, (1352), 952 states have internal predecessors, (1352), 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) [2023-04-02 06:35:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1355 transitions. [2023-04-02 06:35:20,767 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1355 transitions. Word has length 89 [2023-04-02 06:35:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:20,767 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1355 transitions. [2023-04-02 06:35:20,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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) [2023-04-02 06:35:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1355 transitions. [2023-04-02 06:35:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 06:35:20,768 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:20,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:20,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:35:20,768 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:20,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1157611206, now seen corresponding path program 1 times [2023-04-02 06:35:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779750769] [2023-04-02 06:35:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:21,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:21,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779750769] [2023-04-02 06:35:21,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779750769] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:21,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:21,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:35:21,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188904353] [2023-04-02 06:35:21,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:21,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:35:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:21,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:35:21,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:35:21,070 INFO L87 Difference]: Start difference. First operand 956 states and 1355 transitions. Second operand has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 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) [2023-04-02 06:35:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:22,154 INFO L93 Difference]: Finished difference Result 2564 states and 3679 transitions. [2023-04-02 06:35:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:35:22,155 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 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 90 [2023-04-02 06:35:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:22,160 INFO L225 Difference]: With dead ends: 2564 [2023-04-02 06:35:22,160 INFO L226 Difference]: Without dead ends: 1753 [2023-04-02 06:35:22,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:35:22,163 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1170 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:22,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 412 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:35:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2023-04-02 06:35:22,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 911. [2023-04-02 06:35:22,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.4233737596471885) internal successors, (1291), 907 states have internal predecessors, (1291), 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) [2023-04-02 06:35:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1294 transitions. [2023-04-02 06:35:22,455 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1294 transitions. Word has length 90 [2023-04-02 06:35:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:22,455 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1294 transitions. [2023-04-02 06:35:22,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 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) [2023-04-02 06:35:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1294 transitions. [2023-04-02 06:35:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 06:35:22,457 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:22,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:22,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:35:22,457 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:22,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:22,457 INFO L85 PathProgramCache]: Analyzing trace with hash -912477616, now seen corresponding path program 1 times [2023-04-02 06:35:22,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:22,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386179986] [2023-04-02 06:35:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:22,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386179986] [2023-04-02 06:35:22,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386179986] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:22,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:22,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:35:22,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960323077] [2023-04-02 06:35:22,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:22,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:35:22,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:22,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:35:22,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:35:22,767 INFO L87 Difference]: Start difference. First operand 911 states and 1294 transitions. Second operand has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 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) [2023-04-02 06:35:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:24,001 INFO L93 Difference]: Finished difference Result 2474 states and 3546 transitions. [2023-04-02 06:35:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:35:24,002 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 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 90 [2023-04-02 06:35:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:24,006 INFO L225 Difference]: With dead ends: 2474 [2023-04-02 06:35:24,006 INFO L226 Difference]: Without dead ends: 1718 [2023-04-02 06:35:24,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:35:24,008 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 852 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:24,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 396 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:35:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2023-04-02 06:35:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 911. [2023-04-02 06:35:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.4167585446527011) internal successors, (1285), 907 states have internal predecessors, (1285), 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) [2023-04-02 06:35:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1288 transitions. [2023-04-02 06:35:24,370 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1288 transitions. Word has length 90 [2023-04-02 06:35:24,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:24,370 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1288 transitions. [2023-04-02 06:35:24,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 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) [2023-04-02 06:35:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1288 transitions. [2023-04-02 06:35:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:35:24,375 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:24,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:24,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:35:24,375 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:24,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:24,376 INFO L85 PathProgramCache]: Analyzing trace with hash -302390708, now seen corresponding path program 1 times [2023-04-02 06:35:24,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:24,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636487561] [2023-04-02 06:35:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:24,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:24,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636487561] [2023-04-02 06:35:24,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636487561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:24,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:24,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:35:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14063609] [2023-04-02 06:35:24,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:24,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:35:24,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:24,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:35:24,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:35:24,921 INFO L87 Difference]: Start difference. First operand 911 states and 1288 transitions. Second operand has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 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) [2023-04-02 06:35:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:33,788 INFO L93 Difference]: Finished difference Result 18570 states and 26733 transitions. [2023-04-02 06:35:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 06:35:33,788 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 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 91 [2023-04-02 06:35:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:33,869 INFO L225 Difference]: With dead ends: 18570 [2023-04-02 06:35:33,869 INFO L226 Difference]: Without dead ends: 17769 [2023-04-02 06:35:33,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=653, Invalid=2209, Unknown=0, NotChecked=0, Total=2862 [2023-04-02 06:35:33,874 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 4966 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4966 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:33,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4966 Valid, 1297 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:35:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17769 states. [2023-04-02 06:35:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17769 to 917. [2023-04-02 06:35:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 913 states have (on average 1.411829134720701) internal successors, (1289), 913 states have internal predecessors, (1289), 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) [2023-04-02 06:35:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1292 transitions. [2023-04-02 06:35:34,414 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1292 transitions. Word has length 91 [2023-04-02 06:35:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:34,414 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1292 transitions. [2023-04-02 06:35:34,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 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) [2023-04-02 06:35:34,414 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1292 transitions. [2023-04-02 06:35:34,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:35:34,415 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:34,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:34,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:35:34,415 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:34,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:34,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1961483803, now seen corresponding path program 1 times [2023-04-02 06:35:34,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:34,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962457559] [2023-04-02 06:35:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:35,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962457559] [2023-04-02 06:35:35,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962457559] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:35,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:35,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:35:35,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77214527] [2023-04-02 06:35:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:35,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:35:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:35:35,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:35:35,018 INFO L87 Difference]: Start difference. First operand 917 states and 1292 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 1 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) [2023-04-02 06:35:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:38,453 INFO L93 Difference]: Finished difference Result 3535 states and 5075 transitions. [2023-04-02 06:35:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:35:38,454 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 1 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 92 [2023-04-02 06:35:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:38,459 INFO L225 Difference]: With dead ends: 3535 [2023-04-02 06:35:38,459 INFO L226 Difference]: Without dead ends: 3281 [2023-04-02 06:35:38,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:35:38,460 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1024 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:38,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 2156 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:35:38,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2023-04-02 06:35:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 906. [2023-04-02 06:35:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 902 states have (on average 1.4079822616407982) internal successors, (1270), 902 states have internal predecessors, (1270), 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) [2023-04-02 06:35:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1273 transitions. [2023-04-02 06:35:38,909 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1273 transitions. Word has length 92 [2023-04-02 06:35:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:38,909 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1273 transitions. [2023-04-02 06:35:38,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 1 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) [2023-04-02 06:35:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1273 transitions. [2023-04-02 06:35:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:35:38,910 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:38,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:38,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:35:38,910 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:38,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:38,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1611675076, now seen corresponding path program 1 times [2023-04-02 06:35:38,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:38,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379681399] [2023-04-02 06:35:38,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:38,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:39,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:39,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379681399] [2023-04-02 06:35:39,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379681399] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:39,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:39,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:35:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939163921] [2023-04-02 06:35:39,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:39,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:35:39,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:35:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:35:39,434 INFO L87 Difference]: Start difference. First operand 906 states and 1273 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 12 states have internal predecessors, (89), 1 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) [2023-04-02 06:35:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:43,876 INFO L93 Difference]: Finished difference Result 4955 states and 7130 transitions. [2023-04-02 06:35:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 06:35:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 12 states have internal predecessors, (89), 1 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 92 [2023-04-02 06:35:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:43,884 INFO L225 Difference]: With dead ends: 4955 [2023-04-02 06:35:43,884 INFO L226 Difference]: Without dead ends: 4683 [2023-04-02 06:35:43,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:35:43,885 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1499 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:43,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1461 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:35:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2023-04-02 06:35:44,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 872. [2023-04-02 06:35:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 868 states have (on average 1.4101382488479262) internal successors, (1224), 868 states have internal predecessors, (1224), 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) [2023-04-02 06:35:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1227 transitions. [2023-04-02 06:35:44,441 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1227 transitions. Word has length 92 [2023-04-02 06:35:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:44,441 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1227 transitions. [2023-04-02 06:35:44,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 12 states have internal predecessors, (89), 1 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) [2023-04-02 06:35:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1227 transitions. [2023-04-02 06:35:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:35:44,441 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:44,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:44,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:35:44,442 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:44,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:44,442 INFO L85 PathProgramCache]: Analyzing trace with hash -49705050, now seen corresponding path program 1 times [2023-04-02 06:35:44,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:44,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021152344] [2023-04-02 06:35:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:44,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:46,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021152344] [2023-04-02 06:35:46,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021152344] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:46,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:46,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2023-04-02 06:35:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267575761] [2023-04-02 06:35:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:46,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-04-02 06:35:46,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-04-02 06:35:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=858, Unknown=0, NotChecked=0, Total=930 [2023-04-02 06:35:46,305 INFO L87 Difference]: Start difference. First operand 872 states and 1227 transitions. Second operand has 31 states, 31 states have (on average 2.870967741935484) internal successors, (89), 30 states have internal predecessors, (89), 1 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) [2023-04-02 06:35:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:58,137 INFO L93 Difference]: Finished difference Result 7139 states and 10287 transitions. [2023-04-02 06:35:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-02 06:35:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.870967741935484) internal successors, (89), 30 states have internal predecessors, (89), 1 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 92 [2023-04-02 06:35:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:58,147 INFO L225 Difference]: With dead ends: 7139 [2023-04-02 06:35:58,147 INFO L226 Difference]: Without dead ends: 6905 [2023-04-02 06:35:58,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=557, Invalid=3103, Unknown=0, NotChecked=0, Total=3660 [2023-04-02 06:35:58,149 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 2915 mSDsluCounter, 10801 mSDsCounter, 0 mSdLazyCounter, 7825 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 11398 SdHoareTripleChecker+Invalid, 7852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 7825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:58,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2915 Valid, 11398 Invalid, 7852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 7825 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-02 06:35:58,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6905 states. [2023-04-02 06:35:58,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6905 to 895. [2023-04-02 06:35:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 891 states have (on average 1.4062850729517395) internal successors, (1253), 891 states have internal predecessors, (1253), 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) [2023-04-02 06:35:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1256 transitions. [2023-04-02 06:35:58,790 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1256 transitions. Word has length 92 [2023-04-02 06:35:58,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:58,790 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1256 transitions. [2023-04-02 06:35:58,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.870967741935484) internal successors, (89), 30 states have internal predecessors, (89), 1 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) [2023-04-02 06:35:58,790 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1256 transitions. [2023-04-02 06:35:58,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:35:58,791 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:58,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:58,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:35:58,791 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:58,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -852726587, now seen corresponding path program 1 times [2023-04-02 06:35:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:58,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490771075] [2023-04-02 06:35:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:59,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:59,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490771075] [2023-04-02 06:35:59,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490771075] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:59,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:59,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:35:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204691760] [2023-04-02 06:35:59,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:35:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:35:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:35:59,308 INFO L87 Difference]: Start difference. First operand 895 states and 1256 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 1 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) [2023-04-02 06:36:03,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:03,167 INFO L93 Difference]: Finished difference Result 3444 states and 4942 transitions. [2023-04-02 06:36:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:36:03,167 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 1 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 92 [2023-04-02 06:36:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:03,171 INFO L225 Difference]: With dead ends: 3444 [2023-04-02 06:36:03,171 INFO L226 Difference]: Without dead ends: 3190 [2023-04-02 06:36:03,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:36:03,172 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1840 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:03,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 1550 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:36:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2023-04-02 06:36:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 874. [2023-04-02 06:36:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 870 states have (on average 1.4068965517241379) internal successors, (1224), 870 states have internal predecessors, (1224), 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) [2023-04-02 06:36:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1227 transitions. [2023-04-02 06:36:03,857 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1227 transitions. Word has length 92 [2023-04-02 06:36:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:03,857 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1227 transitions. [2023-04-02 06:36:03,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 1 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) [2023-04-02 06:36:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1227 transitions. [2023-04-02 06:36:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:36:03,857 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:03,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:03,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:36:03,858 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:03,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:03,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2126956258, now seen corresponding path program 1 times [2023-04-02 06:36:03,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:03,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920613715] [2023-04-02 06:36:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:03,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:36:04,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:04,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920613715] [2023-04-02 06:36:04,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920613715] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:04,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:04,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:36:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819104153] [2023-04-02 06:36:04,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:04,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:36:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:36:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:36:04,155 INFO L87 Difference]: Start difference. First operand 874 states and 1227 transitions. Second operand has 11 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 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) [2023-04-02 06:36:06,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:06,466 INFO L93 Difference]: Finished difference Result 2440 states and 3480 transitions. [2023-04-02 06:36:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:36:06,467 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 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 92 [2023-04-02 06:36:06,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:06,469 INFO L225 Difference]: With dead ends: 2440 [2023-04-02 06:36:06,470 INFO L226 Difference]: Without dead ends: 1671 [2023-04-02 06:36:06,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:36:06,471 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 977 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:06,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 531 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:36:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2023-04-02 06:36:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 871. [2023-04-02 06:36:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 867 states have (on average 1.4071510957324107) internal successors, (1220), 867 states have internal predecessors, (1220), 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) [2023-04-02 06:36:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1223 transitions. [2023-04-02 06:36:07,137 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1223 transitions. Word has length 92 [2023-04-02 06:36:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:07,137 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1223 transitions. [2023-04-02 06:36:07,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 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) [2023-04-02 06:36:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1223 transitions. [2023-04-02 06:36:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 06:36:07,138 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:07,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:07,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:36:07,138 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:07,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:07,138 INFO L85 PathProgramCache]: Analyzing trace with hash 502139625, now seen corresponding path program 1 times [2023-04-02 06:36:07,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:07,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712511116] [2023-04-02 06:36:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:07,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:36:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712511116] [2023-04-02 06:36:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712511116] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:08,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:08,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 06:36:08,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668838680] [2023-04-02 06:36:08,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:08,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 06:36:08,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:08,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 06:36:08,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:36:08,085 INFO L87 Difference]: Start difference. First operand 871 states and 1223 transitions. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 18 states have internal predecessors, (90), 1 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) [2023-04-02 06:36:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:22,139 INFO L93 Difference]: Finished difference Result 11830 states and 17095 transitions. [2023-04-02 06:36:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 06:36:22,139 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 18 states have internal predecessors, (90), 1 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 93 [2023-04-02 06:36:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:22,151 INFO L225 Difference]: With dead ends: 11830 [2023-04-02 06:36:22,151 INFO L226 Difference]: Without dead ends: 11596 [2023-04-02 06:36:22,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=581, Invalid=2389, Unknown=0, NotChecked=0, Total=2970 [2023-04-02 06:36:22,154 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 3475 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:22,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 4707 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:36:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11596 states. [2023-04-02 06:36:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11596 to 877. [2023-04-02 06:36:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 873 states have (on average 1.4054982817869415) internal successors, (1227), 873 states have internal predecessors, (1227), 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) [2023-04-02 06:36:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1230 transitions. [2023-04-02 06:36:23,033 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1230 transitions. Word has length 93 [2023-04-02 06:36:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:23,033 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1230 transitions. [2023-04-02 06:36:23,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 18 states have internal predecessors, (90), 1 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) [2023-04-02 06:36:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1230 transitions. [2023-04-02 06:36:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 06:36:23,034 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:23,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:23,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:36:23,034 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:23,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1981519527, now seen corresponding path program 1 times [2023-04-02 06:36:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:23,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121660095] [2023-04-02 06:36:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:23,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:36:23,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:23,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121660095] [2023-04-02 06:36:23,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121660095] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:23,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:23,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 06:36:23,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086724870] [2023-04-02 06:36:23,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:23,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 06:36:23,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 06:36:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:36:23,872 INFO L87 Difference]: Start difference. First operand 877 states and 1230 transitions. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 18 states have internal predecessors, (90), 1 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) [2023-04-02 06:36:32,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:32,649 INFO L93 Difference]: Finished difference Result 6396 states and 9220 transitions. [2023-04-02 06:36:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 06:36:32,649 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 18 states have internal predecessors, (90), 1 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 93 [2023-04-02 06:36:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:32,656 INFO L225 Difference]: With dead ends: 6396 [2023-04-02 06:36:32,656 INFO L226 Difference]: Without dead ends: 6162 [2023-04-02 06:36:32,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=352, Invalid=1370, Unknown=0, NotChecked=0, Total=1722 [2023-04-02 06:36:32,658 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 2382 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:32,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2382 Valid, 2638 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:36:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2023-04-02 06:36:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 846. [2023-04-02 06:36:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 842 states have (on average 1.4097387173396674) internal successors, (1187), 842 states have internal predecessors, (1187), 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) [2023-04-02 06:36:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1190 transitions. [2023-04-02 06:36:33,507 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1190 transitions. Word has length 93 [2023-04-02 06:36:33,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:33,508 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1190 transitions. [2023-04-02 06:36:33,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 18 states have internal predecessors, (90), 1 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) [2023-04-02 06:36:33,508 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1190 transitions. [2023-04-02 06:36:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 06:36:33,509 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:33,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:33,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:36:33,509 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:33,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:33,509 INFO L85 PathProgramCache]: Analyzing trace with hash 818959969, now seen corresponding path program 1 times [2023-04-02 06:36:33,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762564057] [2023-04-02 06:36:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:33,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:34,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:36:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762564057] [2023-04-02 06:36:34,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762564057] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:34,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:34,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-04-02 06:36:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384362947] [2023-04-02 06:36:34,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:34,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-02 06:36:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-02 06:36:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2023-04-02 06:36:34,812 INFO L87 Difference]: Start difference. First operand 846 states and 1190 transitions. Second operand has 32 states, 32 states have (on average 2.8125) internal successors, (90), 31 states have internal predecessors, (90), 1 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) [2023-04-02 06:36:47,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:47,198 INFO L93 Difference]: Finished difference Result 6965 states and 10030 transitions. [2023-04-02 06:36:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-02 06:36:47,198 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.8125) internal successors, (90), 31 states have internal predecessors, (90), 1 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 93 [2023-04-02 06:36:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:47,206 INFO L225 Difference]: With dead ends: 6965 [2023-04-02 06:36:47,206 INFO L226 Difference]: Without dead ends: 6213 [2023-04-02 06:36:47,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=552, Invalid=2988, Unknown=0, NotChecked=0, Total=3540 [2023-04-02 06:36:47,212 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2138 mSDsluCounter, 8906 mSDsCounter, 0 mSdLazyCounter, 7221 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 9414 SdHoareTripleChecker+Invalid, 7268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 7221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:47,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2138 Valid, 9414 Invalid, 7268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 7221 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-02 06:36:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6213 states. [2023-04-02 06:36:48,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6213 to 867. [2023-04-02 06:36:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 863 states have (on average 1.4044032444959444) internal successors, (1212), 863 states have internal predecessors, (1212), 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) [2023-04-02 06:36:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1215 transitions. [2023-04-02 06:36:48,109 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1215 transitions. Word has length 93 [2023-04-02 06:36:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:48,110 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1215 transitions. [2023-04-02 06:36:48,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.8125) internal successors, (90), 31 states have internal predecessors, (90), 1 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) [2023-04-02 06:36:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1215 transitions. [2023-04-02 06:36:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 06:36:48,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:48,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:48,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:36:48,110 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:48,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash 746275710, now seen corresponding path program 1 times [2023-04-02 06:36:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:48,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480028289] [2023-04-02 06:36:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:48,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:48,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:36:48,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480028289] [2023-04-02 06:36:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480028289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:48,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:48,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:36:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296760480] [2023-04-02 06:36:48,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:48,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:36:48,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:36:48,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:36:48,576 INFO L87 Difference]: Start difference. First operand 867 states and 1215 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 13 states have internal predecessors, (91), 1 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) [2023-04-02 06:36:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:53,745 INFO L93 Difference]: Finished difference Result 3372 states and 4840 transitions. [2023-04-02 06:36:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:36:53,745 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 13 states have internal predecessors, (91), 1 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 94 [2023-04-02 06:36:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:53,748 INFO L225 Difference]: With dead ends: 3372 [2023-04-02 06:36:53,748 INFO L226 Difference]: Without dead ends: 3130 [2023-04-02 06:36:53,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:36:53,749 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 963 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:53,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1977 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:36:53,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2023-04-02 06:36:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 856. [2023-04-02 06:36:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 852 states have (on average 1.4061032863849765) internal successors, (1198), 852 states have internal predecessors, (1198), 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) [2023-04-02 06:36:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1201 transitions. [2023-04-02 06:36:54,726 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1201 transitions. Word has length 94 [2023-04-02 06:36:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:54,726 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1201 transitions. [2023-04-02 06:36:54,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 13 states have internal predecessors, (91), 1 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) [2023-04-02 06:36:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1201 transitions. [2023-04-02 06:36:54,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:36:54,727 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:54,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:54,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:36:54,727 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:54,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash -867870414, now seen corresponding path program 1 times [2023-04-02 06:36:54,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:54,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575847243] [2023-04-02 06:36:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:54,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:36:54,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575847243] [2023-04-02 06:36:54,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575847243] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:54,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:54,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:36:54,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946704461] [2023-04-02 06:36:54,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:54,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:54,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:54,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:54,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:54,937 INFO L87 Difference]: Start difference. First operand 856 states and 1201 transitions. Second operand has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:36:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:58,335 INFO L93 Difference]: Finished difference Result 3154 states and 4457 transitions. [2023-04-02 06:36:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:36:58,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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 123 [2023-04-02 06:36:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:58,338 INFO L225 Difference]: With dead ends: 3154 [2023-04-02 06:36:58,338 INFO L226 Difference]: Without dead ends: 2404 [2023-04-02 06:36:58,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:36:58,353 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1268 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:58,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 307 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:36:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2023-04-02 06:36:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1019. [2023-04-02 06:36:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1015 states have (on average 1.3793103448275863) internal successors, (1400), 1015 states have internal predecessors, (1400), 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) [2023-04-02 06:36:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1403 transitions. [2023-04-02 06:36:59,487 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1403 transitions. Word has length 123 [2023-04-02 06:36:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:59,487 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1403 transitions. [2023-04-02 06:36:59,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:36:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1403 transitions. [2023-04-02 06:36:59,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:36:59,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:59,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:59,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:36:59,488 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:59,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash 253547674, now seen corresponding path program 1 times [2023-04-02 06:36:59,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:59,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827729376] [2023-04-02 06:36:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:59,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:36:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:59,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827729376] [2023-04-02 06:36:59,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827729376] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:59,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:59,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:36:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65447305] [2023-04-02 06:36:59,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:59,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:59,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:59,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:59,672 INFO L87 Difference]: Start difference. First operand 1019 states and 1403 transitions. Second operand has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:37:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:05,350 INFO L93 Difference]: Finished difference Result 5087 states and 7105 transitions. [2023-04-02 06:37:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:37:05,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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 123 [2023-04-02 06:37:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:05,354 INFO L225 Difference]: With dead ends: 5087 [2023-04-02 06:37:05,354 INFO L226 Difference]: Without dead ends: 4174 [2023-04-02 06:37:05,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:37:05,356 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 1422 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:05,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 363 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:37:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4174 states. [2023-04-02 06:37:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4174 to 2060. [2023-04-02 06:37:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2056 states have (on average 1.3959143968871595) internal successors, (2870), 2056 states have internal predecessors, (2870), 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) [2023-04-02 06:37:07,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2873 transitions. [2023-04-02 06:37:07,679 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2873 transitions. Word has length 123 [2023-04-02 06:37:07,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:07,680 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 2873 transitions. [2023-04-02 06:37:07,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:37:07,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2873 transitions. [2023-04-02 06:37:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:37:07,681 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:07,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:37:07,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:37:07,681 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:07,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash 84417763, now seen corresponding path program 1 times [2023-04-02 06:37:07,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:07,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120380549] [2023-04-02 06:37:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:07,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:07,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:37:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:07,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120380549] [2023-04-02 06:37:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120380549] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:37:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126200857] [2023-04-02 06:37:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:07,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:37:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:07,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:37:07,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:37:07,884 INFO L87 Difference]: Start difference. First operand 2060 states and 2873 transitions. Second operand has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:37:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:17,665 INFO L93 Difference]: Finished difference Result 9432 states and 13205 transitions. [2023-04-02 06:37:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:37:17,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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 123 [2023-04-02 06:37:17,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:17,674 INFO L225 Difference]: With dead ends: 9432 [2023-04-02 06:37:17,674 INFO L226 Difference]: Without dead ends: 7478 [2023-04-02 06:37:17,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:37:17,679 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1241 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:17,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 365 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:37:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7478 states. [2023-04-02 06:37:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7478 to 4272. [2023-04-02 06:37:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4268 states have (on average 1.4039362699156515) internal successors, (5992), 4268 states have internal predecessors, (5992), 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) [2023-04-02 06:37:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 5995 transitions. [2023-04-02 06:37:22,535 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 5995 transitions. Word has length 123 [2023-04-02 06:37:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:22,535 INFO L495 AbstractCegarLoop]: Abstraction has 4272 states and 5995 transitions. [2023-04-02 06:37:22,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:37:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 5995 transitions. [2023-04-02 06:37:22,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:37:22,536 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:22,536 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:37:22,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-02 06:37:22,537 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:22,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:22,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1968564591, now seen corresponding path program 1 times [2023-04-02 06:37:22,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:22,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669624228] [2023-04-02 06:37:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:22,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:37:22,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:22,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669624228] [2023-04-02 06:37:22,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669624228] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:22,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:22,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:37:22,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085663737] [2023-04-02 06:37:22,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:22,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:37:22,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:22,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:37:22,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:37:22,733 INFO L87 Difference]: Start difference. First operand 4272 states and 5995 transitions. Second operand has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:37:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:41,034 INFO L93 Difference]: Finished difference Result 19164 states and 27019 transitions. [2023-04-02 06:37:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:37:41,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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 123 [2023-04-02 06:37:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:41,052 INFO L225 Difference]: With dead ends: 19164 [2023-04-02 06:37:41,052 INFO L226 Difference]: Without dead ends: 14998 [2023-04-02 06:37:41,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:37:41,058 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1597 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:41,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 357 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:37:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14998 states. [2023-04-02 06:37:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14998 to 8956. [2023-04-02 06:37:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8956 states, 8952 states have (on average 1.4075067024128687) internal successors, (12600), 8952 states have internal predecessors, (12600), 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) [2023-04-02 06:37:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8956 states to 8956 states and 12603 transitions. [2023-04-02 06:37:51,087 INFO L78 Accepts]: Start accepts. Automaton has 8956 states and 12603 transitions. Word has length 123 [2023-04-02 06:37:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:37:51,088 INFO L495 AbstractCegarLoop]: Abstraction has 8956 states and 12603 transitions. [2023-04-02 06:37:51,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:37:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8956 states and 12603 transitions. [2023-04-02 06:37:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:37:51,089 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:37:51,089 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:37:51,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-02 06:37:51,089 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:37:51,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:37:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash -360719243, now seen corresponding path program 1 times [2023-04-02 06:37:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:37:51,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807870860] [2023-04-02 06:37:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:37:51,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:37:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:51,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:37:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:37:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:37:51,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:37:51,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807870860] [2023-04-02 06:37:51,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807870860] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:37:51,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:37:51,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:37:51,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243553252] [2023-04-02 06:37:51,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:37:51,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:37:51,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:37:51,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:37:51,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:37:51,283 INFO L87 Difference]: Start difference. First operand 8956 states and 12603 transitions. Second operand has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:38:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:30,528 INFO L93 Difference]: Finished difference Result 41852 states and 59119 transitions. [2023-04-02 06:38:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:38:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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 123 [2023-04-02 06:38:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:30,583 INFO L225 Difference]: With dead ends: 41852 [2023-04-02 06:38:30,584 INFO L226 Difference]: Without dead ends: 33002 [2023-04-02 06:38:30,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:38:30,600 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1744 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:30,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1744 Valid, 359 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:38:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33002 states. [2023-04-02 06:38:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33002 to 18844. [2023-04-02 06:38:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18844 states, 18840 states have (on average 1.4089171974522292) internal successors, (26544), 18840 states have internal predecessors, (26544), 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) [2023-04-02 06:38:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18844 states to 18844 states and 26547 transitions. [2023-04-02 06:38:51,585 INFO L78 Accepts]: Start accepts. Automaton has 18844 states and 26547 transitions. Word has length 123 [2023-04-02 06:38:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:51,586 INFO L495 AbstractCegarLoop]: Abstraction has 18844 states and 26547 transitions. [2023-04-02 06:38:51,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-04-02 06:38:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 18844 states and 26547 transitions. [2023-04-02 06:38:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 06:38:51,593 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:51,593 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:38:51,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-02 06:38:51,593 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:51,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash 976948895, now seen corresponding path program 1 times [2023-04-02 06:38:51,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:51,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388684267] [2023-04-02 06:38:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:51,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:51,771 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 06:38:51,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:51,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388684267] [2023-04-02 06:38:51,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388684267] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:51,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:51,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:38:51,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462516518] [2023-04-02 06:38:51,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:51,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:38:51,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:51,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:38:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:38:51,773 INFO L87 Difference]: Start difference. First operand 18844 states and 26547 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 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) [2023-04-02 06:39:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:12,745 INFO L93 Difference]: Finished difference Result 36336 states and 51109 transitions. [2023-04-02 06:39:12,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:12,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 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 152 [2023-04-02 06:39:12,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:12,766 INFO L225 Difference]: With dead ends: 36336 [2023-04-02 06:39:12,766 INFO L226 Difference]: Without dead ends: 17598 [2023-04-02 06:39:12,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:12,784 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 74 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:12,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 372 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:39:12,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17598 states.