/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:32:17,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:32:17,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:32:17,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:32:17,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:32:17,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:32:17,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:32:17,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:32:17,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:32:17,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:32:17,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:32:17,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:32:17,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:32:17,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:32:17,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:32:17,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:32:17,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:32:17,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:32:17,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:32:17,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:32:17,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:32:17,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:32:17,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:32:17,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:32:17,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:32:17,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:32:17,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:32:17,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:32:17,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:32:17,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:32:17,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:32:17,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:32:17,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:32:17,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:32:17,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:32:17,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:32:17,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:32:17,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:32:17,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:32:17,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:32:17,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:32:17,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:32:17,640 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:32:17,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:32:17,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:32:17,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:32:17,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:32:17,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:32:17,641 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:32:17,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:32:17,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:32:17,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:32:17,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:32:17,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:32:17,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:32:17,642 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:32:17,642 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:32:17,642 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:32:17,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:32:17,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:32:17,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:32:17,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:32:17,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:32:17,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:17,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:32:17,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:32:17,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:32:17,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:32:17,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:32:17,644 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:32:17,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:32:17,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:32:17,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:32:17,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:32:17,645 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:32:17,645 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:32:17,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:32:17,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:32:17,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:32:17,936 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:32:17,936 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:32:17,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-11 06:32:18,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2d1be10/7e56c1ca122f429991e6111e04551f03/FLAGeb7539c74 [2022-01-11 06:32:18,492 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:32:18,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-11 06:32:18,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2d1be10/7e56c1ca122f429991e6111e04551f03/FLAGeb7539c74 [2022-01-11 06:32:18,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2d1be10/7e56c1ca122f429991e6111e04551f03 [2022-01-11 06:32:18,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:32:18,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:32:18,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:18,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:32:18,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:32:18,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:18" (1/1) ... [2022-01-11 06:32:18,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e5420f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:18, skipping insertion in model container [2022-01-11 06:32:18,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:18" (1/1) ... [2022-01-11 06:32:18,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:32:18,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:32:19,213 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.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-01-11 06:32:19,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:19,281 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:32:19,340 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.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-01-11 06:32:19,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:19,402 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:32:19,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19 WrapperNode [2022-01-11 06:32:19,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:19,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:19,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:32:19,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:32:19,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,459 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 624 [2022-01-11 06:32:19,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:19,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:32:19,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:32:19,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:32:19,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:32:19,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:32:19,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:32:19,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:32:19,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:19,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:32:19,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:32:19,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:32:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:32:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:32:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:32:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:32:19,754 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:32:19,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:32:20,256 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:32:20,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:32:20,266 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:32:20,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:20 BoogieIcfgContainer [2022-01-11 06:32:20,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:32:20,270 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:32:20,270 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:32:20,271 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:32:20,274 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:20" (1/1) ... [2022-01-11 06:32:20,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:20 BasicIcfg [2022-01-11 06:32:20,818 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:32:20,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:32:20,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:32:20,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:32:20,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:32:18" (1/4) ... [2022-01-11 06:32:20,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d372815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:20, skipping insertion in model container [2022-01-11 06:32:20,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (2/4) ... [2022-01-11 06:32:20,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d372815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:20, skipping insertion in model container [2022-01-11 06:32:20,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:20" (3/4) ... [2022-01-11 06:32:20,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d372815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:32:20, skipping insertion in model container [2022-01-11 06:32:20,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:20" (4/4) ... [2022-01-11 06:32:20,828 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:32:20,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:32:20,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:32:20,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:32:20,896 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:32:20,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:32:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 168 states have (on average 1.7202380952380953) internal successors, (289), 169 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:32:20,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:20,925 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] [2022-01-11 06:32:20,926 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:20,931 INFO L85 PathProgramCache]: Analyzing trace with hash -912804526, now seen corresponding path program 1 times [2022-01-11 06:32:20,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:20,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105570397] [2022-01-11 06:32:20,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:20,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:21,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:21,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105570397] [2022-01-11 06:32:21,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105570397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:21,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:21,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:21,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179253681] [2022-01-11 06:32:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:21,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:21,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:21,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:21,562 INFO L87 Difference]: Start difference. First operand has 170 states, 168 states have (on average 1.7202380952380953) internal successors, (289), 169 states have internal predecessors, (289), 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 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:22,281 INFO L93 Difference]: Finished difference Result 345 states and 567 transitions. [2022-01-11 06:32:22,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:22,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-01-11 06:32:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:22,301 INFO L225 Difference]: With dead ends: 345 [2022-01-11 06:32:22,301 INFO L226 Difference]: Without dead ends: 260 [2022-01-11 06:32:22,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:22,310 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 148 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:22,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 534 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 06:32:22,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-11 06:32:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2022-01-11 06:32:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.509727626459144) internal successors, (388), 257 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 388 transitions. [2022-01-11 06:32:22,413 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 388 transitions. Word has length 63 [2022-01-11 06:32:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:22,414 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 388 transitions. [2022-01-11 06:32:22,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 388 transitions. [2022-01-11 06:32:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 06:32:22,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:22,419 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] [2022-01-11 06:32:22,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:32:22,420 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1766845590, now seen corresponding path program 1 times [2022-01-11 06:32:22,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:22,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565242282] [2022-01-11 06:32:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:22,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:22,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:22,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565242282] [2022-01-11 06:32:22,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565242282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:22,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:22,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:32:22,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59638626] [2022-01-11 06:32:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:22,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:32:22,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:32:22,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:22,684 INFO L87 Difference]: Start difference. First operand 258 states and 388 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:22,810 INFO L93 Difference]: Finished difference Result 396 states and 604 transitions. [2022-01-11 06:32:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:32:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2022-01-11 06:32:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:22,814 INFO L225 Difference]: With dead ends: 396 [2022-01-11 06:32:22,814 INFO L226 Difference]: Without dead ends: 394 [2022-01-11 06:32:22,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:32:22,816 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 341 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 612 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 [2022-01-11 06:32:22,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 612 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-11 06:32:22,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 260. [2022-01-11 06:32:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.505791505791506) internal successors, (390), 259 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 390 transitions. [2022-01-11 06:32:22,856 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 390 transitions. Word has length 64 [2022-01-11 06:32:22,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:22,856 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 390 transitions. [2022-01-11 06:32:22,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 390 transitions. [2022-01-11 06:32:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:32:22,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:22,858 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] [2022-01-11 06:32:22,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:32:22,859 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:22,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1061380528, now seen corresponding path program 1 times [2022-01-11 06:32:22,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:22,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641877702] [2022-01-11 06:32:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:22,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:23,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:23,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641877702] [2022-01-11 06:32:23,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641877702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:23,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:23,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:23,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522676969] [2022-01-11 06:32:23,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:23,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:23,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:23,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:23,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:23,151 INFO L87 Difference]: Start difference. First operand 260 states and 390 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:23,936 INFO L93 Difference]: Finished difference Result 1475 states and 2296 transitions. [2022-01-11 06:32:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:32:23,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2022-01-11 06:32:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:23,942 INFO L225 Difference]: With dead ends: 1475 [2022-01-11 06:32:23,943 INFO L226 Difference]: Without dead ends: 1273 [2022-01-11 06:32:23,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-11 06:32:23,946 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 1396 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:23,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 1470 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:32:23,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-01-11 06:32:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 817. [2022-01-11 06:32:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.5392156862745099) internal successors, (1256), 816 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1256 transitions. [2022-01-11 06:32:24,137 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1256 transitions. Word has length 65 [2022-01-11 06:32:24,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:24,138 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1256 transitions. [2022-01-11 06:32:24,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1256 transitions. [2022-01-11 06:32:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:32:24,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:24,140 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] [2022-01-11 06:32:24,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:32:24,140 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash 972134012, now seen corresponding path program 1 times [2022-01-11 06:32:24,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:24,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560413839] [2022-01-11 06:32:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:24,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:24,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:24,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560413839] [2022-01-11 06:32:24,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560413839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:24,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:24,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:32:24,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851027970] [2022-01-11 06:32:24,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:24,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:32:24,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:24,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:32:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:24,473 INFO L87 Difference]: Start difference. First operand 817 states and 1256 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:24,854 INFO L93 Difference]: Finished difference Result 1821 states and 2838 transitions. [2022-01-11 06:32:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:32:24,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-01-11 06:32:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:24,861 INFO L225 Difference]: With dead ends: 1821 [2022-01-11 06:32:24,862 INFO L226 Difference]: Without dead ends: 1293 [2022-01-11 06:32:24,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:24,865 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 211 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:24,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 508 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-01-11 06:32:25,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1283. [2022-01-11 06:32:25,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.5444617784711387) internal successors, (1980), 1282 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1980 transitions. [2022-01-11 06:32:25,153 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1980 transitions. Word has length 66 [2022-01-11 06:32:25,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:25,154 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1980 transitions. [2022-01-11 06:32:25,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:25,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1980 transitions. [2022-01-11 06:32:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:32:25,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:25,155 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] [2022-01-11 06:32:25,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:32:25,156 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:25,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash -330443448, now seen corresponding path program 1 times [2022-01-11 06:32:25,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:25,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767846948] [2022-01-11 06:32:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:25,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:25,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:25,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767846948] [2022-01-11 06:32:25,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767846948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:25,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:25,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:25,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502771344] [2022-01-11 06:32:25,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:25,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:25,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:25,276 INFO L87 Difference]: Start difference. First operand 1283 states and 1980 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:25,644 INFO L93 Difference]: Finished difference Result 2362 states and 3662 transitions. [2022-01-11 06:32:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-11 06:32:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:25,651 INFO L225 Difference]: With dead ends: 2362 [2022-01-11 06:32:25,652 INFO L226 Difference]: Without dead ends: 1513 [2022-01-11 06:32:25,653 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 [2022-01-11 06:32:25,655 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 171 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:25,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 470 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-01-11 06:32:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1511. [2022-01-11 06:32:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 1.5264900662251655) internal successors, (2305), 1510 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2305 transitions. [2022-01-11 06:32:25,953 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2305 transitions. Word has length 67 [2022-01-11 06:32:25,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:25,953 INFO L470 AbstractCegarLoop]: Abstraction has 1511 states and 2305 transitions. [2022-01-11 06:32:25,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2305 transitions. [2022-01-11 06:32:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:32:25,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:25,955 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] [2022-01-11 06:32:25,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:32:25,955 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash -754433176, now seen corresponding path program 1 times [2022-01-11 06:32:25,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:25,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933169052] [2022-01-11 06:32:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:25,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:26,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:26,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933169052] [2022-01-11 06:32:26,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933169052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:26,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:26,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:26,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145930867] [2022-01-11 06:32:26,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:26,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:26,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:26,059 INFO L87 Difference]: Start difference. First operand 1511 states and 2305 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:26,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:26,602 INFO L93 Difference]: Finished difference Result 3954 states and 6060 transitions. [2022-01-11 06:32:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:26,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-11 06:32:26,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:26,613 INFO L225 Difference]: With dead ends: 3954 [2022-01-11 06:32:26,613 INFO L226 Difference]: Without dead ends: 2683 [2022-01-11 06:32:26,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:26,616 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 151 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:26,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 456 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2022-01-11 06:32:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2672. [2022-01-11 06:32:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2671 states have (on average 1.5087982029202547) internal successors, (4030), 2671 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 4030 transitions. [2022-01-11 06:32:27,032 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 4030 transitions. Word has length 67 [2022-01-11 06:32:27,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:27,033 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 4030 transitions. [2022-01-11 06:32:27,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:27,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 4030 transitions. [2022-01-11 06:32:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:32:27,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:27,035 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] [2022-01-11 06:32:27,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:32:27,035 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash 98922540, now seen corresponding path program 1 times [2022-01-11 06:32:27,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:27,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278346153] [2022-01-11 06:32:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:27,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:27,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:27,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278346153] [2022-01-11 06:32:27,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278346153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:27,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:27,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:27,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124079049] [2022-01-11 06:32:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:27,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:27,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:27,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:27,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:27,147 INFO L87 Difference]: Start difference. First operand 2672 states and 4030 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:27,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:27,689 INFO L93 Difference]: Finished difference Result 3816 states and 5749 transitions. [2022-01-11 06:32:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:27,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-11 06:32:27,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:27,700 INFO L225 Difference]: With dead ends: 3816 [2022-01-11 06:32:27,701 INFO L226 Difference]: Without dead ends: 2864 [2022-01-11 06:32:27,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:27,708 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 138 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:27,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 456 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2022-01-11 06:32:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 2862. [2022-01-11 06:32:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2861 states have (on average 1.481999300943726) internal successors, (4240), 2861 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 4240 transitions. [2022-01-11 06:32:28,259 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 4240 transitions. Word has length 67 [2022-01-11 06:32:28,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:28,260 INFO L470 AbstractCegarLoop]: Abstraction has 2862 states and 4240 transitions. [2022-01-11 06:32:28,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:28,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 4240 transitions. [2022-01-11 06:32:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:32:28,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:28,266 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] [2022-01-11 06:32:28,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:32:28,266 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:28,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash -966630003, now seen corresponding path program 1 times [2022-01-11 06:32:28,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:28,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110381441] [2022-01-11 06:32:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:28,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:28,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110381441] [2022-01-11 06:32:28,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110381441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:28,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:28,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:28,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430319932] [2022-01-11 06:32:28,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:28,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:28,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:28,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:28,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:28,569 INFO L87 Difference]: Start difference. First operand 2862 states and 4240 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:31,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:34,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:39,680 INFO L93 Difference]: Finished difference Result 22447 states and 33375 transitions. [2022-01-11 06:32:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:32:39,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2022-01-11 06:32:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:39,784 INFO L225 Difference]: With dead ends: 22447 [2022-01-11 06:32:39,784 INFO L226 Difference]: Without dead ends: 19671 [2022-01-11 06:32:39,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 06:32:39,794 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1201 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:39,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 1068 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 701 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-01-11 06:32:39,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19671 states. [2022-01-11 06:32:42,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19671 to 10203. [2022-01-11 06:32:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10203 states, 10202 states have (on average 1.4718682611252696) internal successors, (15016), 10202 states have internal predecessors, (15016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10203 states to 10203 states and 15016 transitions. [2022-01-11 06:32:42,577 INFO L78 Accepts]: Start accepts. Automaton has 10203 states and 15016 transitions. Word has length 67 [2022-01-11 06:32:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:42,577 INFO L470 AbstractCegarLoop]: Abstraction has 10203 states and 15016 transitions. [2022-01-11 06:32:42,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 10203 states and 15016 transitions. [2022-01-11 06:32:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:32:42,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:42,581 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] [2022-01-11 06:32:42,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:32:42,582 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:42,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:42,582 INFO L85 PathProgramCache]: Analyzing trace with hash -174668055, now seen corresponding path program 1 times [2022-01-11 06:32:42,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:42,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253299651] [2022-01-11 06:32:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:42,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:42,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:42,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253299651] [2022-01-11 06:32:42,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253299651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:42,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:42,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:42,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150603352] [2022-01-11 06:32:42,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:42,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:42,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:42,929 INFO L87 Difference]: Start difference. First operand 10203 states and 15016 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:46,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:49,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:51,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:53,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:13,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:13,737 INFO L93 Difference]: Finished difference Result 74197 states and 109235 transitions. [2022-01-11 06:33:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:33:13,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2022-01-11 06:33:13,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:13,942 INFO L225 Difference]: With dead ends: 74197 [2022-01-11 06:33:13,942 INFO L226 Difference]: Without dead ends: 64581 [2022-01-11 06:33:13,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 06:33:13,979 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 1102 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:13,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 1174 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 718 Invalid, 4 Unknown, 0 Unchecked, 10.6s Time] [2022-01-11 06:33:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64581 states.