/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_LAZY.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:09:03,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:09:03,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:09:03,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 15:09:03,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 15:09:03,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 15:09:03,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 15:09:03,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 15:09:03,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 15:09:03,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 15:09:03,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 15:09:03,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 15:09:03,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:09:03,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:09:03,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:09:03,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:09:03,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:09:03,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:09:03,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:09:03,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:09:03,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:09:03,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:09:03,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:09:03,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:09:03,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 15:09:03,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 15:09:03,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 15:09:03,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 15:09:03,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 15:09:03,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 15:09:03,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 15:09:03,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 15:09:03,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 15:09:03,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 15:09:03,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 15:09:03,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 15:09:03,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 15:09:03,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 15:09:03,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:09:03,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:09:03,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:09:03,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:09:03,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:09:03,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:09:03,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:09:03,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:09:03,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:09:03,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:09:03,960 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:09:03,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:09:03,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:09:03,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:09:03,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:09:03,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:09:03,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:09:03,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:09:03,962 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:09:03,962 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:09:03,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:09:03,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:09:03,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:09:03,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:09:03,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:09:03,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:09:03,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:09:03,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:09:03,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:09:03,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:09:03,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:09:03,964 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:09:03,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:09:03,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:09:03,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:09:03,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:09:03,965 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:09:03,965 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:09:04,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:09:04,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:09:04,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:09:04,198 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:09:04,198 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:09:04,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_valuebound5.c [2022-01-10 15:09:04,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4f0a585/dfd6bb5f0a694833b1f956f9af2d683a/FLAGf998de641 [2022-01-10 15:09:04,601 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:09:04,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_valuebound5.c [2022-01-10 15:09:04,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4f0a585/dfd6bb5f0a694833b1f956f9af2d683a/FLAGf998de641 [2022-01-10 15:09:04,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4f0a585/dfd6bb5f0a694833b1f956f9af2d683a [2022-01-10 15:09:04,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:09:04,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:09:04,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:09:04,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:09:04,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:09:04,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6524fa2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04, skipping insertion in model container [2022-01-10 15:09:04,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:09:04,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:09:04,759 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/ps4-ll_valuebound5.c[458,471] [2022-01-10 15:09:04,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:09:04,790 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:09:04,798 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/ps4-ll_valuebound5.c[458,471] [2022-01-10 15:09:04,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:09:04,812 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:09:04,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04 WrapperNode [2022-01-10 15:09:04,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:09:04,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:09:04,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:09:04,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:09:04,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,834 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 52 [2022-01-10 15:09:04,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:09:04,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:09:04,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:09:04,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:09:04,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:09:04,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:09:04,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:09:04,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:09:04,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (1/1) ... [2022-01-10 15:09:04,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:09:04,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:09:04,900 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 15:09:04,927 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 15:09:04,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:09:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:09:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:09:04,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:09:04,995 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:09:04,996 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:09:05,674 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:09:05,679 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:09:05,679 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 15:09:05,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:09:05 BoogieIcfgContainer [2022-01-10 15:09:05,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:09:05,681 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:09:05,681 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:09:05,684 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:09:05,687 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:09:05" (1/1) ... [2022-01-10 15:09:05,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:09:05 BasicIcfg [2022-01-10 15:09:05,765 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:09:05,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:09:05,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:09:05,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:09:05,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:09:04" (1/4) ... [2022-01-10 15:09:05,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2bb00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:09:05, skipping insertion in model container [2022-01-10 15:09:05,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:09:04" (2/4) ... [2022-01-10 15:09:05,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2bb00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:09:05, skipping insertion in model container [2022-01-10 15:09:05,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:09:05" (3/4) ... [2022-01-10 15:09:05,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2bb00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:09:05, skipping insertion in model container [2022-01-10 15:09:05,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:09:05" (4/4) ... [2022-01-10 15:09:05,771 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound5.cTransformedIcfg [2022-01-10 15:09:05,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:09:05,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 15:09:05,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:09:05,812 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 15:09:05,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 15:09:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 21 states have internal predecessors, (28), 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 15:09:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 15:09:05,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:09:05,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:09:05,826 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 15:09:05,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:09:05,831 INFO L85 PathProgramCache]: Analyzing trace with hash 337447335, now seen corresponding path program 1 times [2022-01-10 15:09:05,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:09:05,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624989051] [2022-01-10 15:09:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:09:05,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:09:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:09:05,977 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 15:09:05,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:09:05,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624989051] [2022-01-10 15:09:05,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624989051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:09:05,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:09:05,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:09:05,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766593803] [2022-01-10 15:09:05,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:09:05,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:09:05,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:09:06,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:09:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:09:06,013 INFO L87 Difference]: Start difference. First operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 21 states have internal predecessors, (28), 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 15:09:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:09:06,031 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-01-10 15:09:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:09:06,033 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 15:09:06,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:09:06,042 INFO L225 Difference]: With dead ends: 41 [2022-01-10 15:09:06,042 INFO L226 Difference]: Without dead ends: 18 [2022-01-10 15:09:06,045 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 15:09:06,050 INFO L933 BasicCegarLoop]: 22 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, 22 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 15:09:06,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:09:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-10 15:09:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-10 15:09:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 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 15:09:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-01-10 15:09:06,076 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2022-01-10 15:09:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:09:06,076 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-01-10 15:09:06,076 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 15:09:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-01-10 15:09:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 15:09:06,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:09:06,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:09:06,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:09:06,077 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 15:09:06,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:09:06,078 INFO L85 PathProgramCache]: Analyzing trace with hash 338370856, now seen corresponding path program 1 times [2022-01-10 15:09:06,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:09:06,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629256874] [2022-01-10 15:09:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:09:06,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:09:06,102 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:09:06,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992751516] [2022-01-10 15:09:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:09:06,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:09:06,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:09:06,108 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 15:09:06,109 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 15:09:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:09:06,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 15:09:06,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:09:06,286 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 15:09:06,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:09:06,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:09:06,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629256874] [2022-01-10 15:09:06,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:09:06,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992751516] [2022-01-10 15:09:06,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992751516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:09:06,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:09:06,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 15:09:06,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168056097] [2022-01-10 15:09:06,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:09:06,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 15:09:06,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:09:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 15:09:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:09:06,290 INFO L87 Difference]: Start difference. First operand 18 states and 18 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 15:09:07,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:09:07,803 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-01-10 15:09:07,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 15:09:07,804 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 15:09:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:09:07,804 INFO L225 Difference]: With dead ends: 32 [2022-01-10 15:09:07,805 INFO L226 Difference]: Without dead ends: 22 [2022-01-10 15:09:07,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 15:09:07,806 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 15:09:07,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 32 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 15:09:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-10 15:09:07,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-10 15:09:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 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 15:09:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-01-10 15:09:07,811 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 7 [2022-01-10 15:09:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:09:07,811 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-01-10 15:09:07,812 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 15:09:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-01-10 15:09:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 15:09:07,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:09:07,812 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:09:07,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 15:09:08,023 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 15:09:08,024 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 15:09:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:09:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash -606169184, now seen corresponding path program 1 times [2022-01-10 15:09:08,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:09:08,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169871917] [2022-01-10 15:09:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:09:08,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:09:08,046 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:09:08,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442202657] [2022-01-10 15:09:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:09:08,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:09:08,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:09:08,048 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 15:09:08,053 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 15:09:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:09:08,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 15:09:08,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:09:08,391 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 15:09:08,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:09:09,187 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 15:09:09,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:09:09,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169871917] [2022-01-10 15:09:09,188 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:09:09,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442202657] [2022-01-10 15:09:09,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442202657] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:09:09,189 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:09:09,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2022-01-10 15:09:09,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584063150] [2022-01-10 15:09:09,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:09:09,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 15:09:09,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:09:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 15:09:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 15:09:09,191 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 15:09:11,202 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 15:09:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:09:11,621 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-01-10 15:09:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 15:09:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 15:09:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:09:11,622 INFO L225 Difference]: With dead ends: 32 [2022-01-10 15:09:11,622 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 15:09:11,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 15:09:11,624 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:09:11,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 31 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 15:09:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 15:09:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2022-01-10 15:09:11,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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 15:09:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-01-10 15:09:11,628 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2022-01-10 15:09:11,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:09:11,629 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-01-10 15:09:11,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 15:09:11,629 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-01-10 15:09:11,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 15:09:11,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:09:11,629 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:09:11,636 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 15:09:11,833 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 15:09:11,834 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:09:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:09:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash 394371515, now seen corresponding path program 1 times [2022-01-10 15:09:11,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:09:11,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779212651] [2022-01-10 15:09:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:09:11,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:09:11,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:09:11,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452357168] [2022-01-10 15:09:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:09:11,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:09:11,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:09:11,857 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 15:09:11,892 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 15:09:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:09:12,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 15:09:12,200 INFO L286 TraceCheckSpWp]: Computing forward predicates...