/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:42:05,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:42:05,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:42:06,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:42:06,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:42:06,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:42:06,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:42:06,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:42:06,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:42:06,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:42:06,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:42:06,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:42:06,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:42:06,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:42:06,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:42:06,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:42:06,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:42:06,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:42:06,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:42:06,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:42:06,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:42:06,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:42:06,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:42:06,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:42:06,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:42:06,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:42:06,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:42:06,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:42:06,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:42:06,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-11 00:42:06,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:42:06,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:42:06,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:42:06,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:42:06,092 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:42:06,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:42:06,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:42:06,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:42:06,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:42:06,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:42:06,093 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:42:06,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:42:06,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:42:06,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:42:06,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:42:06,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:42:06,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:42:06,094 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:42:06,094 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:42:06,094 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:42:06,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:42:06,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:42:06,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:42:06,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:42:06,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:42:06,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:42:06,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:42:06,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:42:06,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:42:06,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:42:06,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:42:06,095 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:42:06,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:42:06,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:42:06,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:42:06,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:42:06,096 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:42:06,096 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:42:06,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:42:06,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:42:06,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:42:06,266 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:42:06,267 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:42:06,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:42:06,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bbc3caca/cb6d7670148145d082b95366a6a3f4e4/FLAG07c2157f5 [2022-01-11 00:42:06,654 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:42:06,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:42:06,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bbc3caca/cb6d7670148145d082b95366a6a3f4e4/FLAG07c2157f5 [2022-01-11 00:42:06,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bbc3caca/cb6d7670148145d082b95366a6a3f4e4 [2022-01-11 00:42:06,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:42:06,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:42:06,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:42:06,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:42:06,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:42:06,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5142d68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06, skipping insertion in model container [2022-01-11 00:42:06,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:42:06,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:42:06,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2022-01-11 00:42:06,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:42:06,881 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:42:06,905 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2022-01-11 00:42:06,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:42:06,924 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:42:06,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06 WrapperNode [2022-01-11 00:42:06,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:42:06,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:42:06,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:42:06,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:42:06,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,968 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 307 [2022-01-11 00:42:06,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:42:06,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:42:06,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:42:06,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:42:06,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:06,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:42:07,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:42:07,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:42:07,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:42:07,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (1/1) ... [2022-01-11 00:42:07,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:42:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:42:07,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:42:07,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:42:07,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:42:07,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:42:07,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:42:07,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:42:07,123 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:42:07,124 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:42:07,404 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:42:07,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:42:07,409 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:42:07,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:42:07 BoogieIcfgContainer [2022-01-11 00:42:07,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:42:07,411 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:42:07,411 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:42:07,412 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:42:07,413 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:42:07" (1/1) ... [2022-01-11 00:42:07,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:42:07 BasicIcfg [2022-01-11 00:42:07,605 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:42:07,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:42:07,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:42:07,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:42:07,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:42:06" (1/4) ... [2022-01-11 00:42:07,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65448838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:42:07, skipping insertion in model container [2022-01-11 00:42:07,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:42:06" (2/4) ... [2022-01-11 00:42:07,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65448838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:42:07, skipping insertion in model container [2022-01-11 00:42:07,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:42:07" (3/4) ... [2022-01-11 00:42:07,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65448838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:42:07, skipping insertion in model container [2022-01-11 00:42:07,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:42:07" (4/4) ... [2022-01-11 00:42:07,610 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 00:42:07,614 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:42:07,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:42:07,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:42:07,664 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:42:07,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:42:07,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 80 states have (on average 1.675) internal successors, (134), 81 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:07,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:42:07,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:07,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:07,685 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:07,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1686305469, now seen corresponding path program 1 times [2022-01-11 00:42:07,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:07,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787989320] [2022-01-11 00:42:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:07,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:42:07,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:07,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787989320] [2022-01-11 00:42:07,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787989320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:42:07,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:42:07,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:42:07,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267528112] [2022-01-11 00:42:07,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:42:07,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:42:07,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:42:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:42:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:08,005 INFO L87 Difference]: Start difference. First operand has 82 states, 80 states have (on average 1.675) internal successors, (134), 81 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:42:08,069 INFO L93 Difference]: Finished difference Result 190 states and 300 transitions. [2022-01-11 00:42:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:42:08,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 00:42:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:42:08,079 INFO L225 Difference]: With dead ends: 190 [2022-01-11 00:42:08,079 INFO L226 Difference]: Without dead ends: 122 [2022-01-11 00:42:08,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:08,084 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 87 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:42:08,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 267 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:42:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-11 00:42:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-01-11 00:42:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.495798319327731) internal successors, (178), 119 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2022-01-11 00:42:08,115 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 37 [2022-01-11 00:42:08,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:42:08,115 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2022-01-11 00:42:08,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2022-01-11 00:42:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-11 00:42:08,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:08,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:08,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:42:08,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:08,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:08,118 INFO L85 PathProgramCache]: Analyzing trace with hash -543782981, now seen corresponding path program 1 times [2022-01-11 00:42:08,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:08,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793125391] [2022-01-11 00:42:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:08,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:42:08,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:08,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793125391] [2022-01-11 00:42:08,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793125391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:42:08,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:42:08,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:42:08,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146007918] [2022-01-11 00:42:08,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:42:08,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:42:08,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:42:08,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:42:08,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:08,220 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:42:08,241 INFO L93 Difference]: Finished difference Result 288 states and 442 transitions. [2022-01-11 00:42:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:42:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-11 00:42:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:42:08,242 INFO L225 Difference]: With dead ends: 288 [2022-01-11 00:42:08,243 INFO L226 Difference]: Without dead ends: 188 [2022-01-11 00:42:08,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:08,244 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 72 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:42:08,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:42:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-11 00:42:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-01-11 00:42:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.518918918918919) internal successors, (281), 185 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 281 transitions. [2022-01-11 00:42:08,260 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 281 transitions. Word has length 38 [2022-01-11 00:42:08,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:42:08,261 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 281 transitions. [2022-01-11 00:42:08,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,261 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 281 transitions. [2022-01-11 00:42:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 00:42:08,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:08,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:08,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:42:08,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:08,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:08,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1418138110, now seen corresponding path program 1 times [2022-01-11 00:42:08,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:08,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74968863] [2022-01-11 00:42:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:08,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:42:08,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:08,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74968863] [2022-01-11 00:42:08,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74968863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:42:08,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:42:08,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:42:08,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266935528] [2022-01-11 00:42:08,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:42:08,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:42:08,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:42:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:42:08,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:42:08,380 INFO L87 Difference]: Start difference. First operand 186 states and 281 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:42:08,550 INFO L93 Difference]: Finished difference Result 765 states and 1188 transitions. [2022-01-11 00:42:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:42:08,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-11 00:42:08,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:42:08,557 INFO L225 Difference]: With dead ends: 765 [2022-01-11 00:42:08,557 INFO L226 Difference]: Without dead ends: 599 [2022-01-11 00:42:08,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:42:08,565 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 368 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:42:08,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 465 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:42:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-01-11 00:42:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 470. [2022-01-11 00:42:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.5458422174840085) internal successors, (725), 469 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 725 transitions. [2022-01-11 00:42:08,686 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 725 transitions. Word has length 39 [2022-01-11 00:42:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:42:08,687 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 725 transitions. [2022-01-11 00:42:08,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,687 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 725 transitions. [2022-01-11 00:42:08,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 00:42:08,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:08,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:08,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:42:08,692 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:08,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:08,693 INFO L85 PathProgramCache]: Analyzing trace with hash 693205432, now seen corresponding path program 1 times [2022-01-11 00:42:08,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:08,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12128837] [2022-01-11 00:42:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:08,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:42:08,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:08,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12128837] [2022-01-11 00:42:08,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12128837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:42:08,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:42:08,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:42:08,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426138876] [2022-01-11 00:42:08,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:42:08,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:42:08,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:42:08,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:42:08,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:08,802 INFO L87 Difference]: Start difference. First operand 470 states and 725 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:42:08,901 INFO L93 Difference]: Finished difference Result 1214 states and 1883 transitions. [2022-01-11 00:42:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:42:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-11 00:42:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:42:08,905 INFO L225 Difference]: With dead ends: 1214 [2022-01-11 00:42:08,905 INFO L226 Difference]: Without dead ends: 764 [2022-01-11 00:42:08,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:08,913 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 78 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:42:08,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 267 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:42:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-01-11 00:42:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 762. [2022-01-11 00:42:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 1.530880420499343) internal successors, (1165), 761 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1165 transitions. [2022-01-11 00:42:09,028 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1165 transitions. Word has length 41 [2022-01-11 00:42:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:42:09,030 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1165 transitions. [2022-01-11 00:42:09,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1165 transitions. [2022-01-11 00:42:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 00:42:09,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:09,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:09,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:42:09,033 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:09,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:09,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1439264426, now seen corresponding path program 1 times [2022-01-11 00:42:09,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:09,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183070401] [2022-01-11 00:42:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:09,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:42:09,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:09,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183070401] [2022-01-11 00:42:09,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183070401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:42:09,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:42:09,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:42:09,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469143938] [2022-01-11 00:42:09,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:42:09,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:42:09,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:42:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:42:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:42:09,269 INFO L87 Difference]: Start difference. First operand 762 states and 1165 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:09,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:42:09,876 INFO L93 Difference]: Finished difference Result 3246 states and 4993 transitions. [2022-01-11 00:42:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:42:09,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-11 00:42:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:42:09,884 INFO L225 Difference]: With dead ends: 3246 [2022-01-11 00:42:09,885 INFO L226 Difference]: Without dead ends: 2504 [2022-01-11 00:42:09,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:42:09,886 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 450 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:42:09,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 512 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:42:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2022-01-11 00:42:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1502. [2022-01-11 00:42:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 1.5063291139240507) internal successors, (2261), 1501 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2261 transitions. [2022-01-11 00:42:10,174 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2261 transitions. Word has length 41 [2022-01-11 00:42:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:42:10,175 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 2261 transitions. [2022-01-11 00:42:10,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2261 transitions. [2022-01-11 00:42:10,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-11 00:42:10,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:10,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:10,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:42:10,182 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1668510806, now seen corresponding path program 1 times [2022-01-11 00:42:10,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:10,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029391487] [2022-01-11 00:42:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:10,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:42:10,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:10,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029391487] [2022-01-11 00:42:10,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029391487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:42:10,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:42:10,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:42:10,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829017940] [2022-01-11 00:42:10,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:42:10,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:42:10,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:42:10,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:42:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:42:10,285 INFO L87 Difference]: Start difference. First operand 1502 states and 2261 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:42:10,867 INFO L93 Difference]: Finished difference Result 2920 states and 4370 transitions. [2022-01-11 00:42:10,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:42:10,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-11 00:42:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:42:10,876 INFO L225 Difference]: With dead ends: 2920 [2022-01-11 00:42:10,876 INFO L226 Difference]: Without dead ends: 2918 [2022-01-11 00:42:10,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:42:10,877 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 257 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:42:10,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 396 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:42:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2022-01-11 00:42:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1598. [2022-01-11 00:42:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1597 states have (on average 1.4758922980588605) internal successors, (2357), 1597 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2357 transitions. [2022-01-11 00:42:11,161 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2357 transitions. Word has length 42 [2022-01-11 00:42:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:42:11,161 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 2357 transitions. [2022-01-11 00:42:11,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2357 transitions. [2022-01-11 00:42:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-11 00:42:11,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:11,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:11,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:42:11,162 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:11,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:11,163 INFO L85 PathProgramCache]: Analyzing trace with hash -183217997, now seen corresponding path program 1 times [2022-01-11 00:42:11,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:11,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882953181] [2022-01-11 00:42:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:11,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:42:11,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:11,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882953181] [2022-01-11 00:42:11,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882953181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:42:11,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:42:11,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:42:11,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768298160] [2022-01-11 00:42:11,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:42:11,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:42:11,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:42:11,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:42:11,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:11,222 INFO L87 Difference]: Start difference. First operand 1598 states and 2357 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:42:11,668 INFO L93 Difference]: Finished difference Result 3956 states and 5841 transitions. [2022-01-11 00:42:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:42:11,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-11 00:42:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:42:11,675 INFO L225 Difference]: With dead ends: 3956 [2022-01-11 00:42:11,675 INFO L226 Difference]: Without dead ends: 2378 [2022-01-11 00:42:11,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:11,677 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 61 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:42:11,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 198 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:42:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-01-11 00:42:12,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2352. [2022-01-11 00:42:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2351 states have (on average 1.4593789876648235) internal successors, (3431), 2351 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3431 transitions. [2022-01-11 00:42:12,078 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3431 transitions. Word has length 43 [2022-01-11 00:42:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:42:12,078 INFO L470 AbstractCegarLoop]: Abstraction has 2352 states and 3431 transitions. [2022-01-11 00:42:12,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3431 transitions. [2022-01-11 00:42:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 00:42:12,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:12,080 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:12,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:42:12,080 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:12,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash 908028815, now seen corresponding path program 1 times [2022-01-11 00:42:12,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:12,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448358162] [2022-01-11 00:42:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:12,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:42:12,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:12,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448358162] [2022-01-11 00:42:12,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448358162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:42:12,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:42:12,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:42:12,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405715859] [2022-01-11 00:42:12,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:42:12,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:42:12,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:42:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:42:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:12,143 INFO L87 Difference]: Start difference. First operand 2352 states and 3431 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:42:12,474 INFO L93 Difference]: Finished difference Result 4016 states and 5881 transitions. [2022-01-11 00:42:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:42:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-11 00:42:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:42:12,479 INFO L225 Difference]: With dead ends: 4016 [2022-01-11 00:42:12,479 INFO L226 Difference]: Without dead ends: 1686 [2022-01-11 00:42:12,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:42:12,482 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 64 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:42:12,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 234 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:42:12,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-01-11 00:42:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2022-01-11 00:42:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.4521687462863933) internal successors, (2444), 1683 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2444 transitions. [2022-01-11 00:42:12,777 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2444 transitions. Word has length 61 [2022-01-11 00:42:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:42:12,777 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 2444 transitions. [2022-01-11 00:42:12,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2444 transitions. [2022-01-11 00:42:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 00:42:12,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:12,778 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:12,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:42:12,778 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:12,779 INFO L85 PathProgramCache]: Analyzing trace with hash -611278158, now seen corresponding path program 1 times [2022-01-11 00:42:12,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:12,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957220628] [2022-01-11 00:42:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:12,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:42:12,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:12,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957220628] [2022-01-11 00:42:12,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957220628] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:42:12,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231772511] [2022-01-11 00:42:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:12,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:42:12,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:42:12,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:42:12,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:42:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:13,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 00:42:13,169 INFO L286 TraceCheckSpWp]: Computing forward predicates...