/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:52:15,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:52:15,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:52:15,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:52:15,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:52:15,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:52:15,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:52:15,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:52:15,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:52:15,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:52:15,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:52:15,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:52:15,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:52:15,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:52:15,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:52:15,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:52:15,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:52:15,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:52:15,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:52:15,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:52:15,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:52:15,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:52:15,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:52:15,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:52:15,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:52:15,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:52:15,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:52:15,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:52:15,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:52:15,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:52:15,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:52:15,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:52:15,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:52:15,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:52:15,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:52:15,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:52:15,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:52:15,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:52:15,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:52:15,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:52:15,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:52:15,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:52:15,464 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:52:15,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:52:15,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:52:15,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:52:15,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:52:15,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:52:15,466 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:52:15,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:52:15,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:52:15,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:52:15,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:52:15,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:52:15,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:52:15,475 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:52:15,475 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:52:15,475 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:52:15,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:52:15,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:52:15,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:52:15,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:52:15,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:52:15,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:52:15,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:52:15,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:52:15,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:52:15,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:52:15,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:52:15,477 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:52:15,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:52:15,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:52:15,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:52:15,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:52:15,479 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:52:15,479 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:52:15,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:52:15,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:52:15,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:52:15,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:52:15,792 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:52:15,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 18:52:15,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/029d36385/4368ced95f2a47ab81f0a14133539bf7/FLAG845961636 [2022-01-10 18:52:16,339 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:52:16,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 18:52:16,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/029d36385/4368ced95f2a47ab81f0a14133539bf7/FLAG845961636 [2022-01-10 18:52:16,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/029d36385/4368ced95f2a47ab81f0a14133539bf7 [2022-01-10 18:52:16,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:52:16,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:52:16,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:52:16,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:52:16,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:52:16,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:16" (1/1) ... [2022-01-10 18:52:16,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e17a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:16, skipping insertion in model container [2022-01-10 18:52:16,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:16" (1/1) ... [2022-01-10 18:52:16,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:52:16,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:52:17,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2022-01-10 18:52:17,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:52:17,088 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:52:17,129 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2022-01-10 18:52:17,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:52:17,177 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:52:17,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17 WrapperNode [2022-01-10 18:52:17,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:52:17,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:52:17,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:52:17,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:52:17,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,248 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 307 [2022-01-10 18:52:17,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:52:17,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:52:17,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:52:17,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:52:17,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:52:17,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:52:17,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:52:17,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:52:17,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:17,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:52:17,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:52:17,341 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) [2022-01-10 18:52:17,369 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 [2022-01-10 18:52:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:52:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:52:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:52:17,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:52:17,489 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:52:17,490 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:52:17,857 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:52:17,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:52:17,864 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:52:17,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:17 BoogieIcfgContainer [2022-01-10 18:52:17,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:52:17,869 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:52:17,869 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:52:17,870 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:52:17,875 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:17" (1/1) ... [2022-01-10 18:52:18,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:52:18 BasicIcfg [2022-01-10 18:52:18,235 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:52:18,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:52:18,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:52:18,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:52:18,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:52:16" (1/4) ... [2022-01-10 18:52:18,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51db2a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:18, skipping insertion in model container [2022-01-10 18:52:18,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:17" (2/4) ... [2022-01-10 18:52:18,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51db2a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:18, skipping insertion in model container [2022-01-10 18:52:18,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:17" (3/4) ... [2022-01-10 18:52:18,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51db2a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:52:18, skipping insertion in model container [2022-01-10 18:52:18,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:52:18" (4/4) ... [2022-01-10 18:52:18,247 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 18:52:18,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:52:18,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:52:18,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:52:18,321 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:52:18,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:52:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 80 states have (on average 1.675) internal successors, (134), 81 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:52:18,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:18,348 INFO L514 BasicCegarLoop]: 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] [2022-01-10 18:52:18,349 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1686305469, now seen corresponding path program 1 times [2022-01-10 18:52:18,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:18,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736529262] [2022-01-10 18:52:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:18,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:18,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:18,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736529262] [2022-01-10 18:52:18,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736529262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:18,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:18,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:18,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816783279] [2022-01-10 18:52:18,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:18,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:18,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:18,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:18,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:18,851 INFO L87 Difference]: Start difference. First operand has 82 states, 80 states have (on average 1.675) internal successors, (134), 81 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:18,901 INFO L93 Difference]: Finished difference Result 190 states and 300 transitions. [2022-01-10 18:52:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-10 18:52:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:18,913 INFO L225 Difference]: With dead ends: 190 [2022-01-10 18:52:18,913 INFO L226 Difference]: Without dead ends: 122 [2022-01-10 18:52:18,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:18,922 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 87 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:18,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 267 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-10 18:52:18,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-01-10 18:52:18,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.495798319327731) internal successors, (178), 119 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2022-01-10 18:52:18,986 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 37 [2022-01-10 18:52:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:18,988 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2022-01-10 18:52:18,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2022-01-10 18:52:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 18:52:18,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:18,991 INFO L514 BasicCegarLoop]: 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] [2022-01-10 18:52:18,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:52:18,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:18,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash -543782981, now seen corresponding path program 1 times [2022-01-10 18:52:18,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:18,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351898432] [2022-01-10 18:52:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:18,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:19,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:19,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351898432] [2022-01-10 18:52:19,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351898432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:19,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:19,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:19,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444454437] [2022-01-10 18:52:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:19,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:19,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:19,224 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:19,273 INFO L93 Difference]: Finished difference Result 288 states and 442 transitions. [2022-01-10 18:52:19,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:19,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-10 18:52:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:19,278 INFO L225 Difference]: With dead ends: 288 [2022-01-10 18:52:19,278 INFO L226 Difference]: Without dead ends: 188 [2022-01-10 18:52:19,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:19,280 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 72 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:19,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-10 18:52:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-01-10 18:52:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.518918918918919) internal successors, (281), 185 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 281 transitions. [2022-01-10 18:52:19,301 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 281 transitions. Word has length 38 [2022-01-10 18:52:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:19,302 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 281 transitions. [2022-01-10 18:52:19,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 281 transitions. [2022-01-10 18:52:19,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 18:52:19,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:19,303 INFO L514 BasicCegarLoop]: 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] [2022-01-10 18:52:19,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:52:19,304 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:19,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:19,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1418138110, now seen corresponding path program 1 times [2022-01-10 18:52:19,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:19,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295451827] [2022-01-10 18:52:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:19,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:19,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:19,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295451827] [2022-01-10 18:52:19,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295451827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:19,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:19,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:52:19,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859365568] [2022-01-10 18:52:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:19,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:52:19,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:19,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:52:19,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:52:19,563 INFO L87 Difference]: Start difference. First operand 186 states and 281 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:19,875 INFO L93 Difference]: Finished difference Result 765 states and 1188 transitions. [2022-01-10 18:52:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:52:19,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-10 18:52:19,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:19,882 INFO L225 Difference]: With dead ends: 765 [2022-01-10 18:52:19,882 INFO L226 Difference]: Without dead ends: 599 [2022-01-10 18:52:19,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:52:19,884 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 368 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:19,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 465 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:52:19,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-01-10 18:52:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 470. [2022-01-10 18:52:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.5458422174840085) internal successors, (725), 469 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 725 transitions. [2022-01-10 18:52:20,002 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 725 transitions. Word has length 39 [2022-01-10 18:52:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:20,003 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 725 transitions. [2022-01-10 18:52:20,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 725 transitions. [2022-01-10 18:52:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 18:52:20,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:20,010 INFO L514 BasicCegarLoop]: 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] [2022-01-10 18:52:20,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:52:20,010 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:20,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:20,011 INFO L85 PathProgramCache]: Analyzing trace with hash 693205432, now seen corresponding path program 1 times [2022-01-10 18:52:20,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:20,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426361842] [2022-01-10 18:52:20,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:20,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:20,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:20,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426361842] [2022-01-10 18:52:20,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426361842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:20,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:20,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:20,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311482626] [2022-01-10 18:52:20,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:20,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:20,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:20,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:20,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:20,145 INFO L87 Difference]: Start difference. First operand 470 states and 725 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:20,264 INFO L93 Difference]: Finished difference Result 1214 states and 1883 transitions. [2022-01-10 18:52:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:20,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 18:52:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:20,269 INFO L225 Difference]: With dead ends: 1214 [2022-01-10 18:52:20,270 INFO L226 Difference]: Without dead ends: 764 [2022-01-10 18:52:20,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:20,276 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 78 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:20,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 267 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-01-10 18:52:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 762. [2022-01-10 18:52:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 1.530880420499343) internal successors, (1165), 761 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1165 transitions. [2022-01-10 18:52:20,438 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1165 transitions. Word has length 41 [2022-01-10 18:52:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:20,440 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1165 transitions. [2022-01-10 18:52:20,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1165 transitions. [2022-01-10 18:52:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 18:52:20,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:20,444 INFO L514 BasicCegarLoop]: 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] [2022-01-10 18:52:20,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:52:20,445 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1439264426, now seen corresponding path program 1 times [2022-01-10 18:52:20,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:20,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218801745] [2022-01-10 18:52:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:20,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:20,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:20,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218801745] [2022-01-10 18:52:20,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218801745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:20,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:20,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:52:20,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362903918] [2022-01-10 18:52:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:20,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:52:20,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:20,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:52:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:52:20,769 INFO L87 Difference]: Start difference. First operand 762 states and 1165 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:21,713 INFO L93 Difference]: Finished difference Result 3246 states and 4993 transitions. [2022-01-10 18:52:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:52:21,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 18:52:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:21,727 INFO L225 Difference]: With dead ends: 3246 [2022-01-10 18:52:21,728 INFO L226 Difference]: Without dead ends: 2504 [2022-01-10 18:52:21,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:52:21,733 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 450 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:21,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 512 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:52:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2022-01-10 18:52:22,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1502. [2022-01-10 18:52:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 1.5063291139240507) internal successors, (2261), 1501 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2261 transitions. [2022-01-10 18:52:22,235 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2261 transitions. Word has length 41 [2022-01-10 18:52:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:22,236 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 2261 transitions. [2022-01-10 18:52:22,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2261 transitions. [2022-01-10 18:52:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 18:52:22,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:22,245 INFO L514 BasicCegarLoop]: 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] [2022-01-10 18:52:22,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:52:22,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:22,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1668510806, now seen corresponding path program 1 times [2022-01-10 18:52:22,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:22,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333230660] [2022-01-10 18:52:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:22,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:22,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:22,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333230660] [2022-01-10 18:52:22,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333230660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:22,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:22,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:52:22,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560592797] [2022-01-10 18:52:22,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:22,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:52:22,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:22,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:52:22,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:52:22,353 INFO L87 Difference]: Start difference. First operand 1502 states and 2261 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:23,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:23,294 INFO L93 Difference]: Finished difference Result 2920 states and 4370 transitions. [2022-01-10 18:52:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:52:23,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-10 18:52:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:23,306 INFO L225 Difference]: With dead ends: 2920 [2022-01-10 18:52:23,306 INFO L226 Difference]: Without dead ends: 2918 [2022-01-10 18:52:23,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:52:23,308 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 257 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:23,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 396 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:23,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2022-01-10 18:52:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1598. [2022-01-10 18:52:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1597 states have (on average 1.4758922980588605) internal successors, (2357), 1597 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2357 transitions. [2022-01-10 18:52:23,718 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2357 transitions. Word has length 42 [2022-01-10 18:52:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:23,719 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 2357 transitions. [2022-01-10 18:52:23,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:23,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2357 transitions. [2022-01-10 18:52:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 18:52:23,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:23,720 INFO L514 BasicCegarLoop]: 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] [2022-01-10 18:52:23,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:52:23,720 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:23,721 INFO L85 PathProgramCache]: Analyzing trace with hash -183217997, now seen corresponding path program 1 times [2022-01-10 18:52:23,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:23,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598121066] [2022-01-10 18:52:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:23,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:23,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:23,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598121066] [2022-01-10 18:52:23,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598121066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:23,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:23,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:23,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199896903] [2022-01-10 18:52:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:23,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:23,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:23,873 INFO L87 Difference]: Start difference. First operand 1598 states and 2357 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:24,560 INFO L93 Difference]: Finished difference Result 3956 states and 5841 transitions. [2022-01-10 18:52:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:24,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-10 18:52:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:24,569 INFO L225 Difference]: With dead ends: 3956 [2022-01-10 18:52:24,570 INFO L226 Difference]: Without dead ends: 2378 [2022-01-10 18:52:24,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:24,575 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 61 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:24,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 198 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-01-10 18:52:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2352. [2022-01-10 18:52:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2351 states have (on average 1.4593789876648235) internal successors, (3431), 2351 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3431 transitions. [2022-01-10 18:52:25,117 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3431 transitions. Word has length 43 [2022-01-10 18:52:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:25,118 INFO L470 AbstractCegarLoop]: Abstraction has 2352 states and 3431 transitions. [2022-01-10 18:52:25,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:25,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3431 transitions. [2022-01-10 18:52:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:52:25,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:25,120 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 18:52:25,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:52:25,121 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:25,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash 908028815, now seen corresponding path program 1 times [2022-01-10 18:52:25,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:25,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568352577] [2022-01-10 18:52:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:25,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:25,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:25,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568352577] [2022-01-10 18:52:25,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568352577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:25,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:25,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:25,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922734936] [2022-01-10 18:52:25,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:25,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:25,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:25,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:25,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:25,235 INFO L87 Difference]: Start difference. First operand 2352 states and 3431 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:25,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:25,688 INFO L93 Difference]: Finished difference Result 4016 states and 5881 transitions. [2022-01-10 18:52:25,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:25,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 18:52:25,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:25,696 INFO L225 Difference]: With dead ends: 4016 [2022-01-10 18:52:25,696 INFO L226 Difference]: Without dead ends: 1686 [2022-01-10 18:52:25,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:25,700 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 64 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:25,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 234 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-01-10 18:52:26,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2022-01-10 18:52:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.4521687462863933) internal successors, (2444), 1683 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2444 transitions. [2022-01-10 18:52:26,098 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2444 transitions. Word has length 61 [2022-01-10 18:52:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:26,099 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 2444 transitions. [2022-01-10 18:52:26,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2444 transitions. [2022-01-10 18:52:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:52:26,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:26,101 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 18:52:26,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:52:26,101 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:26,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash -611278158, now seen corresponding path program 1 times [2022-01-10 18:52:26,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:26,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232404645] [2022-01-10 18:52:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:26,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:52:26,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:26,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232404645] [2022-01-10 18:52:26,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232404645] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:52:26,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938546615] [2022-01-10 18:52:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:26,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:52:26,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:52:26,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:52:26,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:52:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:26,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 18:52:26,645 INFO L286 TraceCheckSpWp]: Computing forward predicates...