/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:34:11,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:34:11,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:34:11,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:34:11,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:34:11,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:34:11,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:34:11,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:34:11,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:34:11,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:34:11,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:34:11,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:34:11,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:34:11,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:34:11,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:34:11,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:34:11,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:34:11,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:34:11,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:34:11,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:34:11,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:34:11,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:34:11,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:34:11,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:34:11,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:34:11,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:34:11,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:34:11,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:34:11,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:34:11,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:34:11,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:34:11,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:34:11,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:34:11,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:34:11,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:34:11,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:34:11,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:34:11,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:34:11,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:34:11,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:34:11,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:34:11,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:34:11,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:34:11,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:34:11,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:34:11,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:34:11,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:34:11,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:34:11,505 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:34:11,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:34:11,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:34:11,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:34:11,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:34:11,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:34:11,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:34:11,506 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:34:11,506 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:34:11,506 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:34:11,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:34:11,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:34:11,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:34:11,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:34:11,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:34:11,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:34:11,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:34:11,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:34:11,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:34:11,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:34:11,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:34:11,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:34:11,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:34:11,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:34:11,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:34:11,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:34:11,509 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:34:11,509 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:34:11,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:34:11,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:34:11,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:34:11,734 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:34:11,735 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:34:11,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-11 06:34:11,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3086630c9/57d5f74846cb4f49990b054d01614b34/FLAGfe5e48801 [2022-01-11 06:34:12,198 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:34:12,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-11 06:34:12,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3086630c9/57d5f74846cb4f49990b054d01614b34/FLAGfe5e48801 [2022-01-11 06:34:12,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3086630c9/57d5f74846cb4f49990b054d01614b34 [2022-01-11 06:34:12,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:34:12,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:34:12,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:34:12,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:34:12,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:34:12,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64567f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12, skipping insertion in model container [2022-01-11 06:34:12,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:34:12,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:34:12,502 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.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2022-01-11 06:34:12,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:34:12,560 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:34:12,617 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.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2022-01-11 06:34:12,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:34:12,666 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:34:12,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12 WrapperNode [2022-01-11 06:34:12,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:34:12,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:34:12,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:34:12,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:34:12,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,712 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 763 [2022-01-11 06:34:12,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:34:12,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:34:12,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:34:12,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:34:12,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:34:12,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:34:12,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:34:12,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:34:12,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (1/1) ... [2022-01-11 06:34:12,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:34:12,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:34:12,800 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) [2022-01-11 06:34:12,810 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 [2022-01-11 06:34:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:34:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:34:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:34:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:34:12,953 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:34:12,954 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:34:13,532 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:34:13,539 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:34:13,539 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:34:13,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:34:13 BoogieIcfgContainer [2022-01-11 06:34:13,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:34:13,542 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:34:13,542 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:34:13,543 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:34:13,545 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:34:13" (1/1) ... [2022-01-11 06:34:14,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:34:14 BasicIcfg [2022-01-11 06:34:14,000 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:34:14,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:34:14,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:34:14,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:34:14,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:34:12" (1/4) ... [2022-01-11 06:34:14,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2c8243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:34:14, skipping insertion in model container [2022-01-11 06:34:14,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:34:12" (2/4) ... [2022-01-11 06:34:14,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2c8243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:34:14, skipping insertion in model container [2022-01-11 06:34:14,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:34:13" (3/4) ... [2022-01-11 06:34:14,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2c8243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:34:14, skipping insertion in model container [2022-01-11 06:34:14,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:34:14" (4/4) ... [2022-01-11 06:34:14,009 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:34:14,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:34:14,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:34:14,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:34:14,064 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 [2022-01-11 06:34:14,064 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:34:14,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 205 states have (on average 1.721951219512195) internal successors, (353), 206 states have internal predecessors, (353), 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) [2022-01-11 06:34:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 06:34:14,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:34:14,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:34:14,088 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:34:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:34:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1217187171, now seen corresponding path program 1 times [2022-01-11 06:34:14,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:34:14,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368755322] [2022-01-11 06:34:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:34:14,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:34:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:34:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:34:14,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:34:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368755322] [2022-01-11 06:34:14,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368755322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:34:14,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:34:14,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:34:14,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704729667] [2022-01-11 06:34:14,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:34:14,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:34:14,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:34:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:34:14,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:34:14,610 INFO L87 Difference]: Start difference. First operand has 207 states, 205 states have (on average 1.721951219512195) internal successors, (353), 206 states have internal predecessors, (353), 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 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-01-11 06:34:15,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:34:15,555 INFO L93 Difference]: Finished difference Result 418 states and 689 transitions. [2022-01-11 06:34:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:34:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-01-11 06:34:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:34:15,573 INFO L225 Difference]: With dead ends: 418 [2022-01-11 06:34:15,573 INFO L226 Difference]: Without dead ends: 315 [2022-01-11 06:34:15,576 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 [2022-01-11 06:34:15,578 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 172 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 06:34:15,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 659 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 06:34:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-01-11 06:34:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2022-01-11 06:34:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.4967948717948718) internal successors, (467), 312 states have internal predecessors, (467), 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) [2022-01-11 06:34:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 467 transitions. [2022-01-11 06:34:15,673 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 467 transitions. Word has length 80 [2022-01-11 06:34:15,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:34:15,674 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 467 transitions. [2022-01-11 06:34:15,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-01-11 06:34:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 467 transitions. [2022-01-11 06:34:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 06:34:15,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:34:15,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:34:15,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:34:15,676 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:34:15,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:34:15,677 INFO L85 PathProgramCache]: Analyzing trace with hash 920917444, now seen corresponding path program 1 times [2022-01-11 06:34:15,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:34:15,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859618456] [2022-01-11 06:34:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:34:15,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:34:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:34:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:34:15,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:34:15,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859618456] [2022-01-11 06:34:15,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859618456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:34:15,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:34:15,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:34:15,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107771709] [2022-01-11 06:34:15,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:34:15,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:34:15,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:34:15,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:34:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:34:15,977 INFO L87 Difference]: Start difference. First operand 313 states and 467 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-01-11 06:34:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:34:16,134 INFO L93 Difference]: Finished difference Result 524 states and 799 transitions. [2022-01-11 06:34:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:34:16,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-01-11 06:34:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:34:16,137 INFO L225 Difference]: With dead ends: 524 [2022-01-11 06:34:16,137 INFO L226 Difference]: Without dead ends: 522 [2022-01-11 06:34:16,140 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 [2022-01-11 06:34:16,141 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 425 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:34:16,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 824 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:34:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-01-11 06:34:16,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 315. [2022-01-11 06:34:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.4936305732484076) internal successors, (469), 314 states have internal predecessors, (469), 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) [2022-01-11 06:34:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 469 transitions. [2022-01-11 06:34:16,173 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 469 transitions. Word has length 81 [2022-01-11 06:34:16,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:34:16,175 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 469 transitions. [2022-01-11 06:34:16,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-01-11 06:34:16,176 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 469 transitions. [2022-01-11 06:34:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 06:34:16,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:34:16,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:34:16,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:34:16,183 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:34:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:34:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1515320230, now seen corresponding path program 1 times [2022-01-11 06:34:16,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:34:16,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129348964] [2022-01-11 06:34:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:34:16,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:34:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:34:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:34:16,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:34:16,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129348964] [2022-01-11 06:34:16,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129348964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:34:16,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:34:16,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:34:16,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254726780] [2022-01-11 06:34:16,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:34:16,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:34:16,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:34:16,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:34:16,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:34:16,474 INFO L87 Difference]: Start difference. First operand 315 states and 469 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2022-01-11 06:34:17,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:34:17,506 INFO L93 Difference]: Finished difference Result 2520 states and 3927 transitions. [2022-01-11 06:34:17,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 06:34:17,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 82 [2022-01-11 06:34:17,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:34:17,514 INFO L225 Difference]: With dead ends: 2520 [2022-01-11 06:34:17,514 INFO L226 Difference]: Without dead ends: 2282 [2022-01-11 06:34:17,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-11 06:34:17,517 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 2226 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 06:34:17,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 3002 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 06:34:17,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-01-11 06:34:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1239. [2022-01-11 06:34:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.5460420032310178) internal successors, (1914), 1238 states have internal predecessors, (1914), 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) [2022-01-11 06:34:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1914 transitions. [2022-01-11 06:34:17,717 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1914 transitions. Word has length 82 [2022-01-11 06:34:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:34:17,718 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1914 transitions. [2022-01-11 06:34:17,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2022-01-11 06:34:17,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1914 transitions. [2022-01-11 06:34:17,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 06:34:17,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:34:17,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:34:17,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:34:17,721 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:34:17,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:34:17,721 INFO L85 PathProgramCache]: Analyzing trace with hash 255570984, now seen corresponding path program 1 times [2022-01-11 06:34:17,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:34:17,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048560249] [2022-01-11 06:34:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:34:17,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:34:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:34:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:34:18,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:34:18,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048560249] [2022-01-11 06:34:18,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048560249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:34:18,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:34:18,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:34:18,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194131223] [2022-01-11 06:34:18,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:34:18,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:34:18,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:34:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:34:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:34:18,063 INFO L87 Difference]: Start difference. First operand 1239 states and 1914 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2022-01-11 06:34:20,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:34:20,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:34:20,606 INFO L93 Difference]: Finished difference Result 2842 states and 4435 transitions. [2022-01-11 06:34:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:34:20,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 83 [2022-01-11 06:34:20,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:34:20,612 INFO L225 Difference]: With dead ends: 2842 [2022-01-11 06:34:20,613 INFO L226 Difference]: Without dead ends: 2008 [2022-01-11 06:34:20,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:34:20,615 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 259 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:34:20,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 796 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:34:20,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2022-01-11 06:34:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2006. [2022-01-11 06:34:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 2005 states have (on average 1.5516209476309226) internal successors, (3111), 2005 states have internal predecessors, (3111), 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) [2022-01-11 06:34:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 3111 transitions. [2022-01-11 06:34:20,940 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 3111 transitions. Word has length 83 [2022-01-11 06:34:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:34:20,943 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 3111 transitions. [2022-01-11 06:34:20,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2022-01-11 06:34:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 3111 transitions. [2022-01-11 06:34:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 06:34:20,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:34:20,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:34:20,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:34:20,945 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:34:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:34:20,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1612555252, now seen corresponding path program 1 times [2022-01-11 06:34:20,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:34:20,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846785979] [2022-01-11 06:34:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:34:20,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:34:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:34:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:34:21,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:34:21,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846785979] [2022-01-11 06:34:21,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846785979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:34:21,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:34:21,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:34:21,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623565182] [2022-01-11 06:34:21,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:34:21,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:34:21,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:34:21,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:34:21,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:34:21,057 INFO L87 Difference]: Start difference. First operand 2006 states and 3111 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2022-01-11 06:34:21,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:34:21,468 INFO L93 Difference]: Finished difference Result 3712 states and 5787 transitions. [2022-01-11 06:34:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:34:21,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2022-01-11 06:34:21,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:34:21,475 INFO L225 Difference]: With dead ends: 3712 [2022-01-11 06:34:21,475 INFO L226 Difference]: Without dead ends: 2282 [2022-01-11 06:34:21,477 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 [2022-01-11 06:34:21,479 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 209 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:34:21,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 572 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:34:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-01-11 06:34:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2280. [2022-01-11 06:34:21,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2279 states have (on average 1.5362000877577886) internal successors, (3501), 2279 states have internal predecessors, (3501), 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) [2022-01-11 06:34:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3501 transitions. [2022-01-11 06:34:21,897 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3501 transitions. Word has length 84 [2022-01-11 06:34:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:34:21,897 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 3501 transitions. [2022-01-11 06:34:21,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2022-01-11 06:34:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3501 transitions. [2022-01-11 06:34:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 06:34:21,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:34:21,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:34:21,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:34:21,898 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:34:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:34:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash 20351417, now seen corresponding path program 1 times [2022-01-11 06:34:21,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:34:21,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057260421] [2022-01-11 06:34:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:34:21,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:34:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:34:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:34:22,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:34:22,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057260421] [2022-01-11 06:34:22,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057260421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:34:22,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:34:22,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:34:22,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516616385] [2022-01-11 06:34:22,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:34:22,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:34:22,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:34:22,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:34:22,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:34:22,221 INFO L87 Difference]: Start difference. First operand 2280 states and 3501 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2022-01-11 06:34:25,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:34:28,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:34:30,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:34:36,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:34:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:34:37,273 INFO L93 Difference]: Finished difference Result 17826 states and 27619 transitions. [2022-01-11 06:34:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:34:37,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 84 [2022-01-11 06:34:37,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:34:37,333 INFO L225 Difference]: With dead ends: 17826 [2022-01-11 06:34:37,333 INFO L226 Difference]: Without dead ends: 15636 [2022-01-11 06:34:37,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 06:34:37,344 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 1909 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 25 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-01-11 06:34:37,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1909 Valid, 1173 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 744 Invalid, 4 Unknown, 0 Unchecked, 10.9s Time] [2022-01-11 06:34:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15636 states. [2022-01-11 06:34:40,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15636 to 11862. [2022-01-11 06:34:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11862 states, 11861 states have (on average 1.5382345502065593) internal successors, (18245), 11861 states have internal predecessors, (18245), 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) [2022-01-11 06:34:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11862 states to 11862 states and 18245 transitions. [2022-01-11 06:34:40,678 INFO L78 Accepts]: Start accepts. Automaton has 11862 states and 18245 transitions. Word has length 84 [2022-01-11 06:34:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:34:40,679 INFO L470 AbstractCegarLoop]: Abstraction has 11862 states and 18245 transitions. [2022-01-11 06:34:40,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2022-01-11 06:34:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 11862 states and 18245 transitions. [2022-01-11 06:34:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 06:34:40,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:34:40,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:34:40,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:34:40,682 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:34:40,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:34:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1773404692, now seen corresponding path program 1 times [2022-01-11 06:34:40,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:34:40,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295473012] [2022-01-11 06:34:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:34:40,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:34:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:34:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:34:40,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:34:40,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295473012] [2022-01-11 06:34:40,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295473012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:34:40,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:34:40,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:34:40,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499678632] [2022-01-11 06:34:40,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:34:40,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:34:40,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:34:40,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:34:40,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:34:40,827 INFO L87 Difference]: Start difference. First operand 11862 states and 18245 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2022-01-11 06:34:46,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:34:46,527 INFO L93 Difference]: Finished difference Result 31548 states and 48467 transitions. [2022-01-11 06:34:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:34:46,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2022-01-11 06:34:46,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:34:46,587 INFO L225 Difference]: With dead ends: 31548 [2022-01-11 06:34:46,588 INFO L226 Difference]: Without dead ends: 20264 [2022-01-11 06:34:46,604 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 [2022-01-11 06:34:46,605 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 189 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:34:46,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 552 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:34:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20264 states. [2022-01-11 06:34:52,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20264 to 20213. [2022-01-11 06:34:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20213 states, 20212 states have (on average 1.517069067880467) internal successors, (30663), 20212 states have internal predecessors, (30663), 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) [2022-01-11 06:34:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20213 states to 20213 states and 30663 transitions. [2022-01-11 06:34:52,341 INFO L78 Accepts]: Start accepts. Automaton has 20213 states and 30663 transitions. Word has length 84 [2022-01-11 06:34:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:34:52,342 INFO L470 AbstractCegarLoop]: Abstraction has 20213 states and 30663 transitions. [2022-01-11 06:34:52,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2022-01-11 06:34:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 20213 states and 30663 transitions. [2022-01-11 06:34:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 06:34:52,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:34:52,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:34:52,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:34:52,349 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:34:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:34:52,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1558523096, now seen corresponding path program 1 times [2022-01-11 06:34:52,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:34:52,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161642928] [2022-01-11 06:34:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:34:52,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:34:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:34:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:34:52,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:34:52,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161642928] [2022-01-11 06:34:52,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161642928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:34:52,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:34:52,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:34:52,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661098445] [2022-01-11 06:34:52,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:34:52,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:34:52,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:34:52,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:34:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:34:52,462 INFO L87 Difference]: Start difference. First operand 20213 states and 30663 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2022-01-11 06:35:02,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:02,246 INFO L93 Difference]: Finished difference Result 56090 states and 84832 transitions. [2022-01-11 06:35:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:35:02,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2022-01-11 06:35:02,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:02,330 INFO L225 Difference]: With dead ends: 56090 [2022-01-11 06:35:02,330 INFO L226 Difference]: Without dead ends: 37196 [2022-01-11 06:35:02,349 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 [2022-01-11 06:35:02,349 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 176 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:02,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 548 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:35:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37196 states. [2022-01-11 06:35:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37196 to 37142. [2022-01-11 06:35:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37142 states, 37141 states have (on average 1.4918822864220134) internal successors, (55410), 37141 states have internal predecessors, (55410), 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) [2022-01-11 06:35:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37142 states to 37142 states and 55410 transitions. [2022-01-11 06:35:13,009 INFO L78 Accepts]: Start accepts. Automaton has 37142 states and 55410 transitions. Word has length 84 [2022-01-11 06:35:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:13,010 INFO L470 AbstractCegarLoop]: Abstraction has 37142 states and 55410 transitions. [2022-01-11 06:35:13,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2022-01-11 06:35:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand 37142 states and 55410 transitions. [2022-01-11 06:35:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 06:35:13,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:13,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:13,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:35:13,021 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1050781600, now seen corresponding path program 1 times [2022-01-11 06:35:13,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:13,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003786287] [2022-01-11 06:35:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:13,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:13,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:13,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003786287] [2022-01-11 06:35:13,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003786287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:13,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:13,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:35:13,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761299524] [2022-01-11 06:35:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:13,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:35:13,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:35:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:13,210 INFO L87 Difference]: Start difference. First operand 37142 states and 55410 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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)