/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench/hard-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:27:50,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:27:50,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:27:50,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:27:50,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:27:50,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:27:50,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:27:50,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:27:50,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:27:50,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:27:50,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:27:50,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:27:50,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:27:50,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:27:50,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:27:50,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:27:50,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:27:50,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:27:50,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:27:50,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:27:50,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:27:50,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:27:50,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:27:50,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:27:50,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:27:50,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:27:50,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:27:50,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:27:50,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:27:50,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:27:50,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:27:50,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:27:50,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:27:50,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:27:50,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:27:50,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:27:50,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:27:50,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:27:50,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:27:50,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:27:50,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:27:50,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:27:50,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:27:50,734 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:27:50,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:27:50,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:27:50,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:27:50,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:27:50,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:27:50,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:27:50,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:27:50,735 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:27:50,735 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:27:50,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:27:50,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:27:50,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:27:50,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:27:50,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:27:50,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:27:50,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:27:50,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:27:50,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:27:50,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:27:50,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:27:50,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:27:50,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:27:50,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:27:50,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:27:50,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:27:50,739 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:27:50,739 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:27:50,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:27:50,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:27:50,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:27:50,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:27:50,958 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:27:50,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/hard-ll.c [2022-01-10 20:27:51,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f41a4d60/affbd17472cf4651933e4adc2a222a35/FLAGc16a1da0b [2022-01-10 20:27:51,333 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:27:51,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/hard-ll.c [2022-01-10 20:27:51,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f41a4d60/affbd17472cf4651933e4adc2a222a35/FLAGc16a1da0b [2022-01-10 20:27:51,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f41a4d60/affbd17472cf4651933e4adc2a222a35 [2022-01-10 20:27:51,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:27:51,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:27:51,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:27:51,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:27:51,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:27:51,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:51,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560773b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51, skipping insertion in model container [2022-01-10 20:27:51,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:51,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:27:51,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:27:51,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/hard-ll.c[538,551] [2022-01-10 20:27:51,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:27:51,950 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:27:51,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/hard-ll.c[538,551] [2022-01-10 20:27:51,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:27:51,988 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:27:51,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51 WrapperNode [2022-01-10 20:27:51,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:27:51,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:27:51,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:27:51,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:27:51,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,020 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 91 [2022-01-10 20:27:52,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:27:52,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:27:52,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:27:52,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:27:52,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:27:52,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:27:52,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:27:52,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:27:52,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (1/1) ... [2022-01-10 20:27:52,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:27:52,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:27:52,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 20:27:52,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 20:27:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:27:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:27:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:27:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:27:52,158 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:27:52,159 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:27:52,681 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:27:52,685 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:27:52,686 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 20:27:52,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:27:52 BoogieIcfgContainer [2022-01-10 20:27:52,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:27:52,687 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:27:52,687 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:27:52,688 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:27:52,690 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:27:52" (1/1) ... [2022-01-10 20:27:52,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:27:52 BasicIcfg [2022-01-10 20:27:52,745 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:27:52,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:27:52,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:27:52,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:27:52,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:27:51" (1/4) ... [2022-01-10 20:27:52,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ceb63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:27:52, skipping insertion in model container [2022-01-10 20:27:52,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:27:51" (2/4) ... [2022-01-10 20:27:52,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ceb63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:27:52, skipping insertion in model container [2022-01-10 20:27:52,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:27:52" (3/4) ... [2022-01-10 20:27:52,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ceb63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:27:52, skipping insertion in model container [2022-01-10 20:27:52,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:27:52" (4/4) ... [2022-01-10 20:27:52,751 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll.cTransformedIcfg [2022-01-10 20:27:52,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:27:52,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-01-10 20:27:52,784 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:27:52,788 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 20:27:52,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-10 20:27:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 20:27:52,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:27:52,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:27:52,802 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 20:27:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:27:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash 735656298, now seen corresponding path program 1 times [2022-01-10 20:27:52,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:27:52,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276151839] [2022-01-10 20:27:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:27:52,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:27:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:27:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:27:52,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:27:52,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276151839] [2022-01-10 20:27:52,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276151839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:27:52,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:27:52,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:27:52,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822122475] [2022-01-10 20:27:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:27:52,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:27:52,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:27:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:27:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:27:52,930 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:52,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:27:52,941 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2022-01-10 20:27:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:27:52,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-01-10 20:27:52,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:27:52,947 INFO L225 Difference]: With dead ends: 79 [2022-01-10 20:27:52,948 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 20:27:52,949 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 [2022-01-10 20:27:52,952 INFO L933 BasicCegarLoop]: 43 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, 43 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 [2022-01-10 20:27:52,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:27:52,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 20:27:52,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-10 20:27:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:52,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-01-10 20:27:52,976 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 7 [2022-01-10 20:27:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:27:52,976 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-01-10 20:27:52,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-01-10 20:27:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 20:27:52,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:27:52,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:27:52,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:27:52,977 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 20:27:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:27:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash 736579819, now seen corresponding path program 1 times [2022-01-10 20:27:52,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:27:52,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450225186] [2022-01-10 20:27:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:27:52,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:27:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:27:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:27:53,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:27:53,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450225186] [2022-01-10 20:27:53,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450225186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:27:53,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:27:53,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:27:53,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297256776] [2022-01-10 20:27:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:27:53,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:27:53,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:27:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:27:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:27:53,043 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:27:53,125 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2022-01-10 20:27:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:27:53,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-01-10 20:27:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:27:53,127 INFO L225 Difference]: With dead ends: 57 [2022-01-10 20:27:53,127 INFO L226 Difference]: Without dead ends: 55 [2022-01-10 20:27:53,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:27:53,128 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:27:53,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 61 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:27:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-10 20:27:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2022-01-10 20:27:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-01-10 20:27:53,134 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2022-01-10 20:27:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:27:53,134 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-01-10 20:27:53,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-01-10 20:27:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 20:27:53,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:27:53,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:27:53,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:27:53,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 20:27:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:27:53,142 INFO L85 PathProgramCache]: Analyzing trace with hash -816361133, now seen corresponding path program 1 times [2022-01-10 20:27:53,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:27:53,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278690659] [2022-01-10 20:27:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:27:53,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:27:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:27:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:27:53,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:27:53,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278690659] [2022-01-10 20:27:53,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278690659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:27:53,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:27:53,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:27:53,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438037046] [2022-01-10 20:27:53,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:27:53,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:27:53,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:27:53,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:27:53,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:27:53,200 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:27:53,298 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-01-10 20:27:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:27:53,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-01-10 20:27:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:27:53,303 INFO L225 Difference]: With dead ends: 55 [2022-01-10 20:27:53,303 INFO L226 Difference]: Without dead ends: 53 [2022-01-10 20:27:53,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:27:53,304 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:27:53,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 55 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:27:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-10 20:27:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2022-01-10 20:27:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-01-10 20:27:53,309 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 9 [2022-01-10 20:27:53,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:27:53,309 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-01-10 20:27:53,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:53,315 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-01-10 20:27:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 20:27:53,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:27:53,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:27:53,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 20:27:53,317 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 20:27:53,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:27:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1456003483, now seen corresponding path program 1 times [2022-01-10 20:27:53,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:27:53,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206589188] [2022-01-10 20:27:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:27:53,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:27:53,345 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:27:53,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889080126] [2022-01-10 20:27:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:27:53,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:27:53,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:27:53,349 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) [2022-01-10 20:27:53,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:27:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:27:53,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 20:27:53,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:27:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:27:53,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:27:53,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:27:53,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206589188] [2022-01-10 20:27:53,805 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:27:53,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889080126] [2022-01-10 20:27:53,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889080126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:27:53,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:27:53,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:27:53,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915204594] [2022-01-10 20:27:53,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:27:53,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:27:53,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:27:53,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:27:53,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:27:53,811 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:56,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 20:27:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:27:56,240 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-01-10 20:27:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:27:56,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2022-01-10 20:27:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:27:56,241 INFO L225 Difference]: With dead ends: 76 [2022-01-10 20:27:56,241 INFO L226 Difference]: Without dead ends: 53 [2022-01-10 20:27:56,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:27:56,243 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 115 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:27:56,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 53 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 20:27:56,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-10 20:27:56,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2022-01-10 20:27:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-01-10 20:27:56,250 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 11 [2022-01-10 20:27:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:27:56,250 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-01-10 20:27:56,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-01-10 20:27:56,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 20:27:56,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:27:56,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:27:56,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:27:56,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:27:56,469 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 20:27:56,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:27:56,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1352501543, now seen corresponding path program 1 times [2022-01-10 20:27:56,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:27:56,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035314202] [2022-01-10 20:27:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:27:56,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:27:56,496 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:27:56,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461936428] [2022-01-10 20:27:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:27:56,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:27:56,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:27:56,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:27:56,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 20:27:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:27:56,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:27:56,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:27:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:27:56,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:27:56,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:27:56,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035314202] [2022-01-10 20:27:56,807 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:27:56,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461936428] [2022-01-10 20:27:56,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461936428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:27:56,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:27:56,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:27:56,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624653544] [2022-01-10 20:27:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:27:56,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:27:56,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:27:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:27:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:27:56,808 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:27:56,912 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2022-01-10 20:27:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:27:56,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-01-10 20:27:56,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:27:56,914 INFO L225 Difference]: With dead ends: 68 [2022-01-10 20:27:56,914 INFO L226 Difference]: Without dead ends: 56 [2022-01-10 20:27:56,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:27:56,915 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 32 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:27:56,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 50 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:27:56,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-10 20:27:56,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2022-01-10 20:27:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2022-01-10 20:27:56,921 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 15 [2022-01-10 20:27:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:27:56,921 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2022-01-10 20:27:56,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:27:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2022-01-10 20:27:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 20:27:56,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:27:56,922 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:27:56,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 20:27:57,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:27:57,136 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 20:27:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:27:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2131547203, now seen corresponding path program 1 times [2022-01-10 20:27:57,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:27:57,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173141580] [2022-01-10 20:27:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:27:57,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:27:57,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:27:57,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469225319] [2022-01-10 20:27:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:27:57,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:27:57,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:27:57,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:27:57,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 20:27:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:27:57,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 20:27:57,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:27:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:27:57,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:27:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:27:57,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:27:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173141580] [2022-01-10 20:27:57,828 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:27:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469225319] [2022-01-10 20:27:57,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469225319] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:27:57,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:27:57,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2022-01-10 20:27:57,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073483420] [2022-01-10 20:27:57,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:27:57,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 20:27:57,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:27:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 20:27:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:27:57,830 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:28:00,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:28:02,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:28:05,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:28:07,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:28:09,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:28:11,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:28:13,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 20:28:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:28:14,000 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2022-01-10 20:28:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 20:28:14,000 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 19 [2022-01-10 20:28:14,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:28:14,001 INFO L225 Difference]: With dead ends: 121 [2022-01-10 20:28:14,001 INFO L226 Difference]: Without dead ends: 81 [2022-01-10 20:28:14,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-01-10 20:28:14,011 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 173 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 87 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-01-10 20:28:14,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 79 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 77 Invalid, 7 Unknown, 0 Unchecked, 15.7s Time] [2022-01-10 20:28:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-10 20:28:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2022-01-10 20:28:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 76 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:28:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2022-01-10 20:28:14,021 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 19 [2022-01-10 20:28:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:28:14,021 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2022-01-10 20:28:14,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:28:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2022-01-10 20:28:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 20:28:14,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:28:14,022 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:28:14,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 20:28:14,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:28:14,231 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 20:28:14,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:28:14,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1150542684, now seen corresponding path program 1 times [2022-01-10 20:28:14,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:28:14,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331437731] [2022-01-10 20:28:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:28:14,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:28:14,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:28:14,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473727761] [2022-01-10 20:28:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:28:14,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:28:14,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:28:14,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:28:14,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 20:28:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:28:14,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-10 20:28:14,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:28:25,766 WARN L228 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-10 20:29:03,458 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| 2))) (let ((.cse1 (mod .cse2 18446744073709551616)) (.cse0 (* 2 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| 9223372036854775808)))) (and (<= (+ (* 2 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| 9223372036854775808)) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) (+ |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| .cse0)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| 0) (= |c_ULTIMATE.start_ULTIMATE.start_main_~d~0#1Int| (div .cse1 2)) (< |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| 4294967296) (not (= (mod (div .cse1 9223372036854775808) 2) 1)) (< (+ .cse1 .cse0) (+ (* (mod .cse2 9223372036854775808) 2) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)) (< |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int| 4294967296) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int| 1) (= |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)))) is different from false