/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/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:12:11,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:12:11,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:12:11,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:12:11,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:12:11,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:12:11,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:12:11,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:12:11,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:12:11,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:12:11,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:12:11,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:12:11,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:12:11,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:12:11,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:12:11,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:12:11,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:12:11,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:12:11,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:12:11,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:12:11,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:12:11,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:12:11,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:12:11,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:12:11,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:12:11,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:12:11,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:12:11,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:12:11,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:12:11,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:12:11,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:12:11,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:12:11,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:12:11,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:12:11,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:12:11,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:12:11,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:12:11,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:12:11,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:12:11,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:12:11,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:12:11,688 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 06:12:11,718 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:12:11,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:12:11,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:12:11,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:12:11,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:12:11,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:12:11,721 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:12:11,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:12:11,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:12:11,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:12:11,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:12:11,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:12:11,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:12:11,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:12:11,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:12:11,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:12:11,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:12:11,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:12:11,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:12:11,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:12:11,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:12:11,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:12:11,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:12:11,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:12:11,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:12:11,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:12:11,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:12:11,727 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:12:11,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:12:11,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:12:11,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:12:11,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:12:11,729 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:12:11,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:12:11,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:12:12,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:12:12,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:12:12,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:12:12,016 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:12:12,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2022-01-11 06:12:12,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2622ccc4b/7ea6c593147f474c822726f1c434ad94/FLAG94b4e3a4d [2022-01-11 06:12:12,557 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:12:12,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2022-01-11 06:12:12,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2622ccc4b/7ea6c593147f474c822726f1c434ad94/FLAG94b4e3a4d [2022-01-11 06:12:12,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2622ccc4b/7ea6c593147f474c822726f1c434ad94 [2022-01-11 06:12:12,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:12:12,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:12:12,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:12:12,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:12:12,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:12:12,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:12:12" (1/1) ... [2022-01-11 06:12:12,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608a5d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:12, skipping insertion in model container [2022-01-11 06:12:12,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:12:12" (1/1) ... [2022-01-11 06:12:12,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:12:12,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:12:13,346 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/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2022-01-11 06:12:13,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:12:13,384 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:12:13,457 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/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2022-01-11 06:12:13,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:12:13,494 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:12:13,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13 WrapperNode [2022-01-11 06:12:13,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:12:13,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:12:13,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:12:13,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:12:13,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,565 INFO L137 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2022-01-11 06:12:13,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:12:13,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:12:13,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:12:13,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:12:13,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:12:13,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:12:13,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:12:13,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:12:13,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (1/1) ... [2022-01-11 06:12:13,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:12:13,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:12:13,631 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 06:12:13,649 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 06:12:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:12:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:12:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:12:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:12:13,745 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:12:13,746 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:12:14,017 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:12:14,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:12:14,024 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 06:12:14,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:12:14 BoogieIcfgContainer [2022-01-11 06:12:14,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:12:14,027 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:12:14,027 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:12:14,028 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:12:14,031 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:12:14" (1/1) ... [2022-01-11 06:12:14,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:12:14 BasicIcfg [2022-01-11 06:12:14,415 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:12:14,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:12:14,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:12:14,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:12:14,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:12:12" (1/4) ... [2022-01-11 06:12:14,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7821bbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:12:14, skipping insertion in model container [2022-01-11 06:12:14,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:12:13" (2/4) ... [2022-01-11 06:12:14,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7821bbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:12:14, skipping insertion in model container [2022-01-11 06:12:14,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:12:14" (3/4) ... [2022-01-11 06:12:14,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7821bbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:12:14, skipping insertion in model container [2022-01-11 06:12:14,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:12:14" (4/4) ... [2022-01-11 06:12:14,426 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.cTransformedIcfg [2022-01-11 06:12:14,431 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:12:14,431 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:12:14,483 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:12:14,494 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 06:12:14,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:12:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.6753246753246753) internal successors, (129), 78 states have internal predecessors, (129), 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 06:12:14,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 06:12:14,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:14,521 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] [2022-01-11 06:12:14,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:14,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1131158864, now seen corresponding path program 1 times [2022-01-11 06:12:14,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:14,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787461154] [2022-01-11 06:12:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:14,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:14,872 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 06:12:14,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787461154] [2022-01-11 06:12:14,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787461154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:12:14,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:12:14,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:12:14,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477175238] [2022-01-11 06:12:14,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:12:14,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 06:12:14,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:12:14,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 06:12:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:12:14,932 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.6753246753246753) internal successors, (129), 78 states have internal predecessors, (129), 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 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 06:12:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:12:14,962 INFO L93 Difference]: Finished difference Result 136 states and 218 transitions. [2022-01-11 06:12:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 06:12:14,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2022-01-11 06:12:14,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:12:14,974 INFO L225 Difference]: With dead ends: 136 [2022-01-11 06:12:14,975 INFO L226 Difference]: Without dead ends: 75 [2022-01-11 06:12:14,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:12:14,982 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:12:14,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:12:14,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-11 06:12:15,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-01-11 06:12:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.6486486486486487) internal successors, (122), 74 states have internal predecessors, (122), 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 06:12:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 122 transitions. [2022-01-11 06:12:15,024 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 122 transitions. Word has length 25 [2022-01-11 06:12:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:12:15,025 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 122 transitions. [2022-01-11 06:12:15,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 06:12:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 122 transitions. [2022-01-11 06:12:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 06:12:15,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:15,028 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] [2022-01-11 06:12:15,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:12:15,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:15,032 INFO L85 PathProgramCache]: Analyzing trace with hash 722334639, now seen corresponding path program 1 times [2022-01-11 06:12:15,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:15,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146102564] [2022-01-11 06:12:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:15,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:15,241 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 06:12:15,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:15,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146102564] [2022-01-11 06:12:15,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146102564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:12:15,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:12:15,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:12:15,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111641894] [2022-01-11 06:12:15,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:12:15,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:12:15,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:12:15,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:12:15,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:12:15,245 INFO L87 Difference]: Start difference. First operand 75 states and 122 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 06:12:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:12:15,343 INFO L93 Difference]: Finished difference Result 183 states and 290 transitions. [2022-01-11 06:12:15,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:12:15,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2022-01-11 06:12:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:12:15,345 INFO L225 Difference]: With dead ends: 183 [2022-01-11 06:12:15,345 INFO L226 Difference]: Without dead ends: 127 [2022-01-11 06:12:15,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:12:15,347 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 84 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:12:15,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 450 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:12:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-11 06:12:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2022-01-11 06:12:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 74 states have internal predecessors, (105), 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 06:12:15,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2022-01-11 06:12:15,355 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 25 [2022-01-11 06:12:15,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:12:15,355 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2022-01-11 06:12:15,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 06:12:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2022-01-11 06:12:15,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 06:12:15,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:15,357 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 06:12:15,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:12:15,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:15,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:15,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1908617889, now seen corresponding path program 1 times [2022-01-11 06:12:15,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:15,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570525373] [2022-01-11 06:12:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:15,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:15,517 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 06:12:15,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:15,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570525373] [2022-01-11 06:12:15,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570525373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:12:15,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:12:15,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:12:15,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339604182] [2022-01-11 06:12:15,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:12:15,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:12:15,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:12:15,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:12:15,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:12:15,522 INFO L87 Difference]: Start difference. First operand 75 states and 105 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 06:12:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:12:15,557 INFO L93 Difference]: Finished difference Result 167 states and 249 transitions. [2022-01-11 06:12:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:12:15,561 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 06:12:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:12:15,562 INFO L225 Difference]: With dead ends: 167 [2022-01-11 06:12:15,562 INFO L226 Difference]: Without dead ends: 115 [2022-01-11 06:12:15,563 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 06:12:15,564 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 236 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 06:12:15,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 236 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:12:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-01-11 06:12:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2022-01-11 06:12:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4732142857142858) internal successors, (165), 112 states have internal predecessors, (165), 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 06:12:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2022-01-11 06:12:15,573 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 41 [2022-01-11 06:12:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:12:15,574 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2022-01-11 06:12:15,574 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 06:12:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2022-01-11 06:12:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-11 06:12:15,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:15,576 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 06:12:15,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:12:15,576 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:15,577 INFO L85 PathProgramCache]: Analyzing trace with hash 732930523, now seen corresponding path program 1 times [2022-01-11 06:12:15,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:15,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575634653] [2022-01-11 06:12:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:15,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:15,682 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 06:12:15,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:15,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575634653] [2022-01-11 06:12:15,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575634653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:12:15,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:12:15,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:12:15,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171791675] [2022-01-11 06:12:15,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:12:15,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:12:15,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:12:15,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:12:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:12:15,687 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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 06:12:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:12:15,724 INFO L93 Difference]: Finished difference Result 269 states and 409 transitions. [2022-01-11 06:12:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:12:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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 06:12:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:12:15,732 INFO L225 Difference]: With dead ends: 269 [2022-01-11 06:12:15,732 INFO L226 Difference]: Without dead ends: 179 [2022-01-11 06:12:15,732 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 06:12:15,733 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 65 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 227 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 06:12:15,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 227 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:12:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-11 06:12:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2022-01-11 06:12:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.5) internal successors, (264), 176 states have internal predecessors, (264), 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 06:12:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 264 transitions. [2022-01-11 06:12:15,758 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 264 transitions. Word has length 42 [2022-01-11 06:12:15,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:12:15,758 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 264 transitions. [2022-01-11 06:12:15,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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 06:12:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 264 transitions. [2022-01-11 06:12:15,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-11 06:12:15,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:15,759 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 06:12:15,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:12:15,760 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash 335405406, now seen corresponding path program 1 times [2022-01-11 06:12:15,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:15,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383380516] [2022-01-11 06:12:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:15,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:15,873 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 06:12:15,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:15,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383380516] [2022-01-11 06:12:15,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383380516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:12:15,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:12:15,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:12:15,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499380285] [2022-01-11 06:12:15,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:12:15,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:12:15,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:12:15,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:12:15,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:12:15,877 INFO L87 Difference]: Start difference. First operand 177 states and 264 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 06:12:15,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:12:15,905 INFO L93 Difference]: Finished difference Result 437 states and 666 transitions. [2022-01-11 06:12:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:12:15,906 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 06:12:15,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:12:15,909 INFO L225 Difference]: With dead ends: 437 [2022-01-11 06:12:15,909 INFO L226 Difference]: Without dead ends: 283 [2022-01-11 06:12:15,912 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 06:12:15,919 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 60 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 218 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 06:12:15,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 218 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:12:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-11 06:12:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2022-01-11 06:12:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.5) internal successors, (420), 280 states have internal predecessors, (420), 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 06:12:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 420 transitions. [2022-01-11 06:12:15,946 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 420 transitions. Word has length 43 [2022-01-11 06:12:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:12:15,947 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 420 transitions. [2022-01-11 06:12:15,947 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 06:12:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 420 transitions. [2022-01-11 06:12:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 06:12:15,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:15,948 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] [2022-01-11 06:12:15,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:12:15,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash -305285192, now seen corresponding path program 1 times [2022-01-11 06:12:15,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:15,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948930243] [2022-01-11 06:12:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:15,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:16,102 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 06:12:16,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:16,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948930243] [2022-01-11 06:12:16,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948930243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:12:16,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:12:16,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:12:16,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164769672] [2022-01-11 06:12:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:12:16,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:12:16,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:12:16,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:12:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:12:16,105 INFO L87 Difference]: Start difference. First operand 281 states and 420 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 06:12:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:12:16,305 INFO L93 Difference]: Finished difference Result 1175 states and 1778 transitions. [2022-01-11 06:12:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:12:16,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2022-01-11 06:12:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:12:16,310 INFO L225 Difference]: With dead ends: 1175 [2022-01-11 06:12:16,310 INFO L226 Difference]: Without dead ends: 917 [2022-01-11 06:12:16,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:12:16,315 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 442 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:12:16,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 323 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:12:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-01-11 06:12:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 725. [2022-01-11 06:12:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 1.5027624309392265) internal successors, (1088), 724 states have internal predecessors, (1088), 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 06:12:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1088 transitions. [2022-01-11 06:12:16,373 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1088 transitions. Word has length 44 [2022-01-11 06:12:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:12:16,374 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 1088 transitions. [2022-01-11 06:12:16,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 06:12:16,375 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1088 transitions. [2022-01-11 06:12:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 06:12:16,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:16,381 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] [2022-01-11 06:12:16,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:12:16,382 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1461230270, now seen corresponding path program 1 times [2022-01-11 06:12:16,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:16,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813040898] [2022-01-11 06:12:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:16,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:16,698 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 06:12:16,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:16,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813040898] [2022-01-11 06:12:16,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813040898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:12:16,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:12:16,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:12:16,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852162354] [2022-01-11 06:12:16,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:12:16,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:12:16,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:12:16,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:12:16,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:12:16,700 INFO L87 Difference]: Start difference. First operand 725 states and 1088 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 06:12:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:12:17,231 INFO L93 Difference]: Finished difference Result 3077 states and 4652 transitions. [2022-01-11 06:12:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:12:17,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2022-01-11 06:12:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:12:17,247 INFO L225 Difference]: With dead ends: 3077 [2022-01-11 06:12:17,247 INFO L226 Difference]: Without dead ends: 2375 [2022-01-11 06:12:17,249 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 06:12:17,252 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 404 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:12:17,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 544 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:12:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2022-01-11 06:12:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1425. [2022-01-11 06:12:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 1.4775280898876404) internal successors, (2104), 1424 states have internal predecessors, (2104), 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 06:12:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2104 transitions. [2022-01-11 06:12:17,476 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2104 transitions. Word has length 45 [2022-01-11 06:12:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:12:17,477 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 2104 transitions. [2022-01-11 06:12:17,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 06:12:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2104 transitions. [2022-01-11 06:12:17,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-11 06:12:17,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:17,478 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] [2022-01-11 06:12:17,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:12:17,478 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:17,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:17,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1915935758, now seen corresponding path program 1 times [2022-01-11 06:12:17,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:17,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492903310] [2022-01-11 06:12:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:17,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:17,602 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 06:12:17,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:17,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492903310] [2022-01-11 06:12:17,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492903310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:12:17,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:12:17,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:12:17,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539422854] [2022-01-11 06:12:17,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:12:17,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:12:17,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:12:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:12:17,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:12:17,606 INFO L87 Difference]: Start difference. First operand 1425 states and 2104 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:12:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:12:18,161 INFO L93 Difference]: Finished difference Result 2756 states and 4040 transitions. [2022-01-11 06:12:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:12:18,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2022-01-11 06:12:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:12:18,172 INFO L225 Difference]: With dead ends: 2756 [2022-01-11 06:12:18,172 INFO L226 Difference]: Without dead ends: 2754 [2022-01-11 06:12:18,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:12:18,174 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 296 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:12:18,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 500 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:12:18,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-01-11 06:12:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1569. [2022-01-11 06:12:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1568 states have (on average 1.433673469387755) internal successors, (2248), 1568 states have internal predecessors, (2248), 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 06:12:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2248 transitions. [2022-01-11 06:12:18,407 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2248 transitions. Word has length 46 [2022-01-11 06:12:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:12:18,408 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 2248 transitions. [2022-01-11 06:12:18,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:12:18,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2248 transitions. [2022-01-11 06:12:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-11 06:12:18,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:18,410 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] [2022-01-11 06:12:18,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:12:18,411 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:18,411 INFO L85 PathProgramCache]: Analyzing trace with hash -705147388, now seen corresponding path program 1 times [2022-01-11 06:12:18,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:18,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022515139] [2022-01-11 06:12:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:18,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:18,575 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 06:12:18,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:18,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022515139] [2022-01-11 06:12:18,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022515139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:12:18,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:12:18,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:12:18,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401502346] [2022-01-11 06:12:18,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:12:18,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:12:18,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:12:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:12:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:12:18,578 INFO L87 Difference]: Start difference. First operand 1569 states and 2248 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:12:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:12:18,922 INFO L93 Difference]: Finished difference Result 3843 states and 5520 transitions. [2022-01-11 06:12:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:12:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2022-01-11 06:12:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:12:18,933 INFO L225 Difference]: With dead ends: 3843 [2022-01-11 06:12:18,933 INFO L226 Difference]: Without dead ends: 2297 [2022-01-11 06:12:18,936 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 06:12:18,939 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:12:18,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 205 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:12:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-01-11 06:12:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2295. [2022-01-11 06:12:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 2294 states have (on average 1.4254577157802963) internal successors, (3270), 2294 states have internal predecessors, (3270), 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 06:12:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3270 transitions. [2022-01-11 06:12:19,287 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3270 transitions. Word has length 47 [2022-01-11 06:12:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:12:19,287 INFO L470 AbstractCegarLoop]: Abstraction has 2295 states and 3270 transitions. [2022-01-11 06:12:19,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:12:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3270 transitions. [2022-01-11 06:12:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:12:19,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:12:19,289 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:12:19,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:12:19,290 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:12:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:12:19,290 INFO L85 PathProgramCache]: Analyzing trace with hash 634560906, now seen corresponding path program 1 times [2022-01-11 06:12:19,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:12:19,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133442310] [2022-01-11 06:12:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:19,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:12:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:12:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 06:12:19,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:12:19,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133442310] [2022-01-11 06:12:19,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133442310] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:12:19,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690549160] [2022-01-11 06:12:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:12:19,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:12:19,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:12:19,521 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 06:12:19,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process