/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:07:17,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:07:17,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:07:17,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:07:17,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:07:17,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:07:17,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:07:17,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:07:17,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:07:17,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:07:17,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:07:17,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:07:17,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:07:17,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:07:17,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:07:17,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:07:17,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:07:17,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:07:17,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:07:17,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:07:17,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:07:17,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:07:17,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:07:17,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:07:17,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:07:17,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:07:17,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:07:17,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:07:17,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:07:17,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:07:17,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:07:17,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:07:17,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:07:17,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:07:17,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:07:17,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:07:17,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:07:17,872 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:07:17,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:07:17,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:07:17,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:07:17,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:07:17,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:07:17,874 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:07:17,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:07:17,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:07:17,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:07:17,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:07:17,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:07:17,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:07:17,875 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:07:17,875 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:07:17,875 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:07:17,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:07:17,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:07:17,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:07:17,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:07:17,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:07:17,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:07:17,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:07:17,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:07:17,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:07:17,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:07:17,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:07:17,877 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:07:17,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:07:17,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:07:17,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:07:17,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:07:17,877 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:07:17,878 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:07:18,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:07:18,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:07:18,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:07:18,063 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:07:18,064 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:07:18,064 INFO L432 ainManager$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.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:07:18,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adad75617/d0a64a08ddd940fb8a577c0bdc6fe3e6/FLAG8a573b0c1 [2022-01-10 13:07:18,474 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:07:18,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:07:18,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adad75617/d0a64a08ddd940fb8a577c0bdc6fe3e6/FLAG8a573b0c1 [2022-01-10 13:07:18,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adad75617/d0a64a08ddd940fb8a577c0bdc6fe3e6 [2022-01-10 13:07:18,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:07:18,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:07:18,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:07:18,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:07:18,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:07:18,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:18,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef537bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18, skipping insertion in model container [2022-01-10 13:07:18,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:18,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:07:18,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:07:18,804 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.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8458,8471] [2022-01-10 13:07:18,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:07:18,886 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:07:18,936 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.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8458,8471] [2022-01-10 13:07:18,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:07:18,994 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:07:18,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18 WrapperNode [2022-01-10 13:07:18,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:07:18,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:07:18,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:07:18,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:07:19,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,043 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 775 [2022-01-10 13:07:19,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:07:19,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:07:19,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:07:19,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:07:19,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:07:19,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:07:19,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:07:19,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:07:19,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (1/1) ... [2022-01-10 13:07:19,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:07:19,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:07:19,118 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 13:07:19,122 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 13:07:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:07:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:07:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:07:19,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:07:19,286 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:07:19,287 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:07:19,823 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:07:19,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:07:19,832 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:07:19,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:19 BoogieIcfgContainer [2022-01-10 13:07:19,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:07:19,835 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:07:19,835 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:07:19,836 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:07:19,837 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:19" (1/1) ... [2022-01-10 13:07:20,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:07:20 BasicIcfg [2022-01-10 13:07:20,391 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:07:20,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:07:20,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:07:20,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:07:20,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:07:18" (1/4) ... [2022-01-10 13:07:20,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba14e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:20, skipping insertion in model container [2022-01-10 13:07:20,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:18" (2/4) ... [2022-01-10 13:07:20,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba14e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:20, skipping insertion in model container [2022-01-10 13:07:20,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:19" (3/4) ... [2022-01-10 13:07:20,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba14e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:07:20, skipping insertion in model container [2022-01-10 13:07:20,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:07:20" (4/4) ... [2022-01-10 13:07:20,398 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:07:20,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:07:20,404 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:07:20,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:07:20,450 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 13:07:20,450 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:07:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.7183098591549295) internal successors, (366), 214 states have internal predecessors, (366), 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 13:07:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 13:07:20,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:20,471 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] [2022-01-10 13:07:20,472 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1379621567, now seen corresponding path program 1 times [2022-01-10 13:07:20,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:20,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533353516] [2022-01-10 13:07:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:20,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:20,958 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 13:07:20,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:20,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533353516] [2022-01-10 13:07:20,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533353516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:20,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:20,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:20,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644355387] [2022-01-10 13:07:20,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:20,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:20,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:20,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:20,988 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.7183098591549295) internal successors, (366), 214 states have internal predecessors, (366), 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) [2022-01-10 13:07:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:21,630 INFO L93 Difference]: Finished difference Result 436 states and 718 transitions. [2022-01-10 13:07:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:21,633 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 [2022-01-10 13:07:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:21,650 INFO L225 Difference]: With dead ends: 436 [2022-01-10 13:07:21,651 INFO L226 Difference]: Without dead ends: 328 [2022-01-10 13:07:21,653 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 13:07:21,657 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 180 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:21,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 685 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 13:07:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-10 13:07:21,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2022-01-10 13:07:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.5076923076923077) internal successors, (490), 325 states have internal predecessors, (490), 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 13:07:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 490 transitions. [2022-01-10 13:07:21,745 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 490 transitions. Word has length 80 [2022-01-10 13:07:21,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:21,746 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 490 transitions. [2022-01-10 13:07:21,747 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) [2022-01-10 13:07:21,747 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 490 transitions. [2022-01-10 13:07:21,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 13:07:21,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:21,753 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] [2022-01-10 13:07:21,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:07:21,753 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:21,755 INFO L85 PathProgramCache]: Analyzing trace with hash 180418501, now seen corresponding path program 1 times [2022-01-10 13:07:21,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:21,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296367634] [2022-01-10 13:07:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:21,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:21,975 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 13:07:21,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:21,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296367634] [2022-01-10 13:07:21,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296367634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:21,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:21,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:07:21,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440574298] [2022-01-10 13:07:21,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:21,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:07:21,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:21,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:07:21,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:07:21,979 INFO L87 Difference]: Start difference. First operand 326 states and 490 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) [2022-01-10 13:07:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:22,093 INFO L93 Difference]: Finished difference Result 541 states and 830 transitions. [2022-01-10 13:07:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:07:22,094 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 [2022-01-10 13:07:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:22,096 INFO L225 Difference]: With dead ends: 541 [2022-01-10 13:07:22,096 INFO L226 Difference]: Without dead ends: 539 [2022-01-10 13:07:22,100 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 13:07:22,100 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 452 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:22,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 857 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-10 13:07:22,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 328. [2022-01-10 13:07:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.5045871559633028) internal successors, (492), 327 states have internal predecessors, (492), 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 13:07:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 492 transitions. [2022-01-10 13:07:22,169 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 492 transitions. Word has length 81 [2022-01-10 13:07:22,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:22,172 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 492 transitions. [2022-01-10 13:07:22,172 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) [2022-01-10 13:07:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 492 transitions. [2022-01-10 13:07:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 13:07:22,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:22,175 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] [2022-01-10 13:07:22,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:07:22,177 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:22,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1299016350, now seen corresponding path program 1 times [2022-01-10 13:07:22,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:22,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922822716] [2022-01-10 13:07:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:22,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:22,457 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 13:07:22,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:22,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922822716] [2022-01-10 13:07:22,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922822716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:22,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:22,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 13:07:22,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10617220] [2022-01-10 13:07:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:22,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 13:07:22,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 13:07:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:07:22,460 INFO L87 Difference]: Start difference. First operand 328 states and 492 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) [2022-01-10 13:07:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:23,468 INFO L93 Difference]: Finished difference Result 2603 states and 4084 transitions. [2022-01-10 13:07:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 13:07:23,469 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 [2022-01-10 13:07:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:23,478 INFO L225 Difference]: With dead ends: 2603 [2022-01-10 13:07:23,478 INFO L226 Difference]: Without dead ends: 2355 [2022-01-10 13:07:23,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-10 13:07:23,487 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 1996 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:23,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1996 Valid, 3782 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 13:07:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2022-01-10 13:07:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1282. [2022-01-10 13:07:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 1.555815768930523) internal successors, (1993), 1281 states have internal predecessors, (1993), 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 13:07:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1993 transitions. [2022-01-10 13:07:23,674 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1993 transitions. Word has length 82 [2022-01-10 13:07:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:23,674 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 1993 transitions. [2022-01-10 13:07:23,674 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) [2022-01-10 13:07:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1993 transitions. [2022-01-10 13:07:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 13:07:23,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:23,676 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, 1, 1] [2022-01-10 13:07:23,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:07:23,676 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:23,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1933428980, now seen corresponding path program 1 times [2022-01-10 13:07:23,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:23,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427532620] [2022-01-10 13:07:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:23,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:23,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:23,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427532620] [2022-01-10 13:07:23,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427532620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:23,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:23,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:07:23,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857728523] [2022-01-10 13:07:23,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:23,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:07:23,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:23,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:07:23,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:07:23,826 INFO L87 Difference]: Start difference. First operand 1282 states and 1993 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) [2022-01-10 13:07:24,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:24,170 INFO L93 Difference]: Finished difference Result 2965 states and 4662 transitions. [2022-01-10 13:07:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:07:24,170 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 [2022-01-10 13:07:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:24,176 INFO L225 Difference]: With dead ends: 2965 [2022-01-10 13:07:24,176 INFO L226 Difference]: Without dead ends: 2091 [2022-01-10 13:07:24,177 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 [2022-01-10 13:07:24,178 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 321 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:24,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 636 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2022-01-10 13:07:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2079. [2022-01-10 13:07:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 2078 states have (on average 1.56111645813282) internal successors, (3244), 2078 states have internal predecessors, (3244), 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 13:07:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 3244 transitions. [2022-01-10 13:07:24,481 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 3244 transitions. Word has length 83 [2022-01-10 13:07:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:24,481 INFO L470 AbstractCegarLoop]: Abstraction has 2079 states and 3244 transitions. [2022-01-10 13:07:24,481 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) [2022-01-10 13:07:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 3244 transitions. [2022-01-10 13:07:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 13:07:24,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:24,482 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] [2022-01-10 13:07:24,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:07:24,483 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:24,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:24,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1821934155, now seen corresponding path program 1 times [2022-01-10 13:07:24,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:24,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533804294] [2022-01-10 13:07:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:24,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:24,772 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 13:07:24,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:24,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533804294] [2022-01-10 13:07:24,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533804294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:24,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:24,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:07:24,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024584834] [2022-01-10 13:07:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:24,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:07:24,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:24,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:07:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:07:24,775 INFO L87 Difference]: Start difference. First operand 2079 states and 3244 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) [2022-01-10 13:07:28,038 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 [] [2022-01-10 13:07:33,456 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 [] [2022-01-10 13:07:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:34,004 INFO L93 Difference]: Finished difference Result 14536 states and 22939 transitions. [2022-01-10 13:07:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 13:07:34,005 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 [2022-01-10 13:07:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:34,047 INFO L225 Difference]: With dead ends: 14536 [2022-01-10 13:07:34,047 INFO L226 Difference]: Without dead ends: 12564 [2022-01-10 13:07:34,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 13:07:34,052 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1843 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:34,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 1105 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 785 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-01-10 13:07:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12564 states. [2022-01-10 13:07:35,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12564 to 7376. [2022-01-10 13:07:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7376 states, 7375 states have (on average 1.567457627118644) internal successors, (11560), 7375 states have internal predecessors, (11560), 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 13:07:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 11560 transitions. [2022-01-10 13:07:35,906 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 11560 transitions. Word has length 84 [2022-01-10 13:07:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:35,906 INFO L470 AbstractCegarLoop]: Abstraction has 7376 states and 11560 transitions. [2022-01-10 13:07:35,907 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) [2022-01-10 13:07:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 11560 transitions. [2022-01-10 13:07:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 13:07:35,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:35,910 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] [2022-01-10 13:07:35,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:07:35,910 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash 880829306, now seen corresponding path program 1 times [2022-01-10 13:07:35,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:35,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863086989] [2022-01-10 13:07:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:35,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:36,020 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 13:07:36,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:36,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863086989] [2022-01-10 13:07:36,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863086989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:36,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:36,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:36,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706366874] [2022-01-10 13:07:36,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:36,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:36,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:36,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:36,021 INFO L87 Difference]: Start difference. First operand 7376 states and 11560 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) [2022-01-10 13:07:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:38,682 INFO L93 Difference]: Finished difference Result 18004 states and 28232 transitions. [2022-01-10 13:07:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:38,682 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 [2022-01-10 13:07:38,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:38,711 INFO L225 Difference]: With dead ends: 18004 [2022-01-10 13:07:38,711 INFO L226 Difference]: Without dead ends: 11042 [2022-01-10 13:07:38,719 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 13:07:38,720 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 211 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 580 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 [2022-01-10 13:07:38,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 580 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11042 states. [2022-01-10 13:07:41,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11042 to 11007. [2022-01-10 13:07:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11007 states, 11006 states have (on average 1.5485189896420135) internal successors, (17043), 11006 states have internal predecessors, (17043), 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 13:07:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11007 states to 11007 states and 17043 transitions. [2022-01-10 13:07:41,457 INFO L78 Accepts]: Start accepts. Automaton has 11007 states and 17043 transitions. Word has length 84 [2022-01-10 13:07:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:41,457 INFO L470 AbstractCegarLoop]: Abstraction has 11007 states and 17043 transitions. [2022-01-10 13:07:41,457 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) [2022-01-10 13:07:41,457 INFO L276 IsEmpty]: Start isEmpty. Operand 11007 states and 17043 transitions. [2022-01-10 13:07:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 13:07:41,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:41,461 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] [2022-01-10 13:07:41,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:07:41,462 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:41,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1661084715, now seen corresponding path program 1 times [2022-01-10 13:07:41,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:41,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493292647] [2022-01-10 13:07:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:41,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:41,543 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 13:07:41,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:41,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493292647] [2022-01-10 13:07:41,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493292647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:41,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:41,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:41,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430170259] [2022-01-10 13:07:41,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:41,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:41,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:41,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:41,544 INFO L87 Difference]: Start difference. First operand 11007 states and 17043 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) [2022-01-10 13:07:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:46,015 INFO L93 Difference]: Finished difference Result 29448 states and 45597 transitions. [2022-01-10 13:07:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:46,016 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 [2022-01-10 13:07:46,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:46,051 INFO L225 Difference]: With dead ends: 29448 [2022-01-10 13:07:46,051 INFO L226 Difference]: Without dead ends: 19144 [2022-01-10 13:07:46,063 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 13:07:46,063 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 198 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 576 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 [2022-01-10 13:07:46,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 576 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19144 states. [2022-01-10 13:07:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19144 to 19107. [2022-01-10 13:07:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19107 states, 19106 states have (on average 1.5291008060295195) internal successors, (29215), 19106 states have internal predecessors, (29215), 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 13:07:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19107 states to 19107 states and 29215 transitions. [2022-01-10 13:07:50,771 INFO L78 Accepts]: Start accepts. Automaton has 19107 states and 29215 transitions. Word has length 84 [2022-01-10 13:07:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:50,771 INFO L470 AbstractCegarLoop]: Abstraction has 19107 states and 29215 transitions. [2022-01-10 13:07:50,772 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) [2022-01-10 13:07:50,772 INFO L276 IsEmpty]: Start isEmpty. Operand 19107 states and 29215 transitions. [2022-01-10 13:07:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 13:07:50,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:50,779 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] [2022-01-10 13:07:50,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:07:50,779 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:50,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:50,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1875966311, now seen corresponding path program 1 times [2022-01-10 13:07:50,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:50,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541304949] [2022-01-10 13:07:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:50,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:50,882 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 13:07:50,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541304949] [2022-01-10 13:07:50,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541304949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:50,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:50,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:50,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193614847] [2022-01-10 13:07:50,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:50,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:50,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:50,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:50,884 INFO L87 Difference]: Start difference. First operand 19107 states and 29215 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) [2022-01-10 13:07:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:59,413 INFO L93 Difference]: Finished difference Result 52661 states and 80357 transitions. [2022-01-10 13:07:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:59,414 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 [2022-01-10 13:07:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:59,478 INFO L225 Difference]: With dead ends: 52661 [2022-01-10 13:07:59,478 INFO L226 Difference]: Without dead ends: 35153 [2022-01-10 13:07:59,499 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 13:07:59,500 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 185 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 576 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 [2022-01-10 13:07:59,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 576 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:59,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2022-01-10 13:08:08,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35115. [2022-01-10 13:08:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35115 states, 35114 states have (on average 1.505126160505781) internal successors, (52851), 35114 states have internal predecessors, (52851), 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 13:08:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35115 states to 35115 states and 52851 transitions. [2022-01-10 13:08:08,657 INFO L78 Accepts]: Start accepts. Automaton has 35115 states and 52851 transitions. Word has length 84 [2022-01-10 13:08:08,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:08:08,658 INFO L470 AbstractCegarLoop]: Abstraction has 35115 states and 52851 transitions. [2022-01-10 13:08:08,658 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) [2022-01-10 13:08:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 35115 states and 52851 transitions. [2022-01-10 13:08:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 13:08:08,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:08:08,671 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] [2022-01-10 13:08:08,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:08:08,671 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:08:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:08:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash -190303711, now seen corresponding path program 1 times [2022-01-10 13:08:08,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:08:08,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022927571] [2022-01-10 13:08:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:08:08,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:08:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:08:08,753 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 13:08:08,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:08:08,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022927571] [2022-01-10 13:08:08,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022927571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:08:08,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:08:08,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:08:08,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113768608] [2022-01-10 13:08:08,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:08:08,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:08:08,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:08:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:08:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:08:08,755 INFO L87 Difference]: Start difference. First operand 35115 states and 52851 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) [2022-01-10 13:08:17,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:08:17,528 INFO L93 Difference]: Finished difference Result 45071 states and 67673 transitions. [2022-01-10 13:08:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:08:17,528 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 [2022-01-10 13:08:17,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:08:17,595 INFO L225 Difference]: With dead ends: 45071 [2022-01-10 13:08:17,595 INFO L226 Difference]: Without dead ends: 36077 [2022-01-10 13:08:17,608 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 13:08:17,609 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 176 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:08:17,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 579 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:08:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36077 states. [2022-01-10 13:08:26,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36077 to 36075. [2022-01-10 13:08:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36075 states, 36074 states have (on average 1.4829239895769806) internal successors, (53495), 36074 states have internal predecessors, (53495), 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 13:08:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36075 states to 36075 states and 53495 transitions. [2022-01-10 13:08:26,654 INFO L78 Accepts]: Start accepts. Automaton has 36075 states and 53495 transitions. Word has length 84 [2022-01-10 13:08:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:08:26,655 INFO L470 AbstractCegarLoop]: Abstraction has 36075 states and 53495 transitions. [2022-01-10 13:08:26,655 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) [2022-01-10 13:08:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 36075 states and 53495 transitions. [2022-01-10 13:08:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 13:08:26,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:08:26,666 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] [2022-01-10 13:08:26,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:08:26,666 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:08:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:08:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1924151370, now seen corresponding path program 1 times [2022-01-10 13:08:26,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:08:26,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287181913] [2022-01-10 13:08:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:08:26,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:08:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:08:26,742 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 13:08:26,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:08:26,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287181913] [2022-01-10 13:08:26,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287181913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:08:26,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:08:26,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:08:26,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654565019] [2022-01-10 13:08:26,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:08:26,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:08:26,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:08:26,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:08:26,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:08:26,743 INFO L87 Difference]: Start difference. First operand 36075 states and 53495 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)