/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-scaling/ps6-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:01:51,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:01:51,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:01:51,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 21:01:51,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 21:01:51,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 21:01:51,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 21:01:51,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 21:01:51,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 21:01:51,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 21:01:51,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 21:01:51,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 21:01:51,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:01:51,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:01:51,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:01:51,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:01:51,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:01:51,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:01:51,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:01:51,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:01:51,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:01:51,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:01:51,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:01:51,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:01:51,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 21:01:51,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 21:01:51,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 21:01:51,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 21:01:51,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 21:01:51,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 21:01:51,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 21:01:51,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 21:01:51,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 21:01:51,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:01:51,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:01:51,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:01:51,833 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 21:01:51,859 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:01:51,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:01:51,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:01:51,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:01:51,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:01:51,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:01:51,861 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:01:51,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:01:51,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:01:51,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:01:51,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:01:51,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:01:51,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:01:51,862 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:01:51,862 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:01:51,862 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:01:51,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:01:51,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:01:51,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:01:51,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:01:51,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:01:51,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:01:51,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:01:51,864 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:01:51,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:01:52,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:01:52,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:01:52,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:01:52,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:01:52,057 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:01:52,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound10.c [2022-01-10 21:01:52,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930dcd70b/0f60dd3a592948469eaecdc44a83cea8/FLAGf2a9bacb2 [2022-01-10 21:01:52,465 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:01:52,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound10.c [2022-01-10 21:01:52,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930dcd70b/0f60dd3a592948469eaecdc44a83cea8/FLAGf2a9bacb2 [2022-01-10 21:01:52,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930dcd70b/0f60dd3a592948469eaecdc44a83cea8 [2022-01-10 21:01:52,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:01:52,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:01:52,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:01:52,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:01:52,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:01:52,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4370ea6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52, skipping insertion in model container [2022-01-10 21:01:52,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:01:52,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:01:52,625 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-scaling/ps6-ll_valuebound10.c[458,471] [2022-01-10 21:01:52,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:01:52,644 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:01:52,655 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-scaling/ps6-ll_valuebound10.c[458,471] [2022-01-10 21:01:52,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:01:52,669 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:01:52,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52 WrapperNode [2022-01-10 21:01:52,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:01:52,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:01:52,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:01:52,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:01:52,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,692 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 56 [2022-01-10 21:01:52,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:01:52,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:01:52,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:01:52,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:01:52,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:01:52,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:01:52,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:01:52,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:01:52,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (1/1) ... [2022-01-10 21:01:52,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:01:52,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:01:52,739 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 21:01:52,744 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 21:01:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:01:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:01:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:01:52,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:01:52,800 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:01:52,801 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:01:53,977 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:01:53,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:01:53,982 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 21:01:53,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:01:53 BoogieIcfgContainer [2022-01-10 21:01:53,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:01:53,983 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:01:53,983 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:01:53,984 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:01:53,986 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:01:53" (1/1) ... [2022-01-10 21:01:54,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:01:54 BasicIcfg [2022-01-10 21:01:54,053 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:01:54,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:01:54,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:01:54,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:01:54,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:01:52" (1/4) ... [2022-01-10 21:01:54,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168dfde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:01:54, skipping insertion in model container [2022-01-10 21:01:54,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:01:52" (2/4) ... [2022-01-10 21:01:54,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168dfde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:01:54, skipping insertion in model container [2022-01-10 21:01:54,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:01:53" (3/4) ... [2022-01-10 21:01:54,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168dfde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:01:54, skipping insertion in model container [2022-01-10 21:01:54,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:01:54" (4/4) ... [2022-01-10 21:01:54,058 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound10.cTransformedIcfg [2022-01-10 21:01:54,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:01:54,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 21:01:54,112 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:01:54,118 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 21:01:54,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 21:01:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 20 states have (on average 1.55) internal successors, (31), 23 states have internal predecessors, (31), 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 21:01:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 21:01:54,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:01:54,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:01:54,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:01:54,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:01:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash -460398865, now seen corresponding path program 1 times [2022-01-10 21:01:54,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:01:54,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263629041] [2022-01-10 21:01:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:01:54,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:01:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:01:54,270 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 21:01:54,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:01:54,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263629041] [2022-01-10 21:01:54,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263629041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:01:54,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:01:54,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:01:54,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968699216] [2022-01-10 21:01:54,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:01:54,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 21:01:54,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:01:54,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 21:01:54,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:01:54,298 INFO L87 Difference]: Start difference. First operand has 24 states, 20 states have (on average 1.55) internal successors, (31), 23 states have internal predecessors, (31), 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 4.5) internal successors, (9), 2 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 21:01:54,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:01:54,307 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2022-01-10 21:01:54,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 21:01:54,308 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 21:01:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:01:54,313 INFO L225 Difference]: With dead ends: 45 [2022-01-10 21:01:54,313 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 21:01:54,314 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 21:01:54,316 INFO L933 BasicCegarLoop]: 24 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, 24 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 21:01:54,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:01:54,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 21:01:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 21:01:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 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 21:01:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-01-10 21:01:54,334 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 9 [2022-01-10 21:01:54,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:01:54,334 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-01-10 21:01:54,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 21:01:54,335 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-01-10 21:01:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 21:01:54,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:01:54,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:01:54,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:01:54,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:01:54,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:01:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash 428028337, now seen corresponding path program 1 times [2022-01-10 21:01:54,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:01:54,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621768470] [2022-01-10 21:01:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:01:54,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:01:54,353 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:01:54,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977430406] [2022-01-10 21:01:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:01:54,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:01:54,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:01:54,355 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 21:01:54,356 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 21:01:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:01:54,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 21:01:54,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:01:54,555 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 21:01:54,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:01:54,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:01:54,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621768470] [2022-01-10 21:01:54,556 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:01:54,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977430406] [2022-01-10 21:01:54,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977430406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:01:54,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:01:54,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 21:01:54,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090830112] [2022-01-10 21:01:54,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:01:54,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:01:54,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:01:54,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:01:54,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:01:54,558 INFO L87 Difference]: Start difference. First operand 20 states and 20 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 21:01:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:01:55,328 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-01-10 21:01:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 21:01:55,328 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 21:01:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:01:55,329 INFO L225 Difference]: With dead ends: 34 [2022-01-10 21:01:55,329 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 21:01:55,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:01:55,330 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 21:01:55,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 38 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 21:01:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 21:01:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-10 21:01:55,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 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 21:01:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-01-10 21:01:55,334 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2022-01-10 21:01:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:01:55,334 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-01-10 21:01:55,334 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 21:01:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-01-10 21:01:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 21:01:55,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:01:55,335 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:01:55,342 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 21:01:55,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:01:55,539 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:01:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:01:55,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1581116969, now seen corresponding path program 1 times [2022-01-10 21:01:55,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:01:55,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852011470] [2022-01-10 21:01:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:01:55,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:01:55,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:01:55,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284008214] [2022-01-10 21:01:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:01:55,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:01:55,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:01:55,564 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 21:01:55,602 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 21:01:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:01:55,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 21:01:55,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:01:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:01:55,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:01:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:01:57,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:01:57,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852011470] [2022-01-10 21:01:57,350 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:01:57,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284008214] [2022-01-10 21:01:57,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284008214] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:01:57,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 21:01:57,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2022-01-10 21:01:57,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080954673] [2022-01-10 21:01:57,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 21:01:57,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 21:01:57,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:01:57,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 21:01:57,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 21:01:57,352 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 21:01:58,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:01:58,253 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-01-10 21:01:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 21:01:58,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 13 [2022-01-10 21:01:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:01:58,255 INFO L225 Difference]: With dead ends: 34 [2022-01-10 21:01:58,255 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 21:01:58,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 21:01:58,256 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 21:01:58,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 38 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 21:01:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 21:01:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2022-01-10 21:01:58,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 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 21:01:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-01-10 21:01:58,260 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2022-01-10 21:01:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:01:58,260 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-01-10 21:01:58,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 21:01:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-01-10 21:01:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 21:01:58,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:01:58,261 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:01:58,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 21:01:58,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-10 21:01:58,466 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:01:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:01:58,466 INFO L85 PathProgramCache]: Analyzing trace with hash -176208633, now seen corresponding path program 1 times [2022-01-10 21:01:58,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:01:58,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759027887] [2022-01-10 21:01:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:01:58,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:01:58,487 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:01:58,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449683552] [2022-01-10 21:01:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:01:58,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:01:58,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:01:58,508 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 21:01:58,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process