/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/lcm2_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:03:57,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:03:57,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:03:57,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 15:03:57,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 15:03:57,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 15:03:57,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 15:03:57,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 15:03:57,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 15:03:57,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 15:03:57,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 15:03:57,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 15:03:57,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:03:57,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:03:57,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:03:57,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:03:57,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:03:57,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:03:57,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:03:57,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:03:57,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:03:57,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:03:57,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:03:57,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:03:57,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 15:03:57,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 15:03:57,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 15:03:57,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 15:03:57,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 15:03:57,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 15:03:57,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 15:03:57,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 15:03:57,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 15:03:57,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 15:03:57,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 15:03:57,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 15:03:57,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 15:03:57,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 15:03:57,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:03:57,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:03:57,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:03:57,682 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 15:03:57,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:03:57,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:03:57,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:03:57,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:03:57,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:03:57,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:03:57,744 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:03:57,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:03:57,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:03:57,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:03:57,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:03:57,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:03:57,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:03:57,745 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:03:57,745 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:03:57,745 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:03:57,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:03:57,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:03:57,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:03:57,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:03:57,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:03:57,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:03:57,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:03:57,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:03:57,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:03:57,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:03:57,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:03:57,747 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:03:57,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:03:57,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:03:57,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:03:57,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:03:57,748 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:03:57,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:03:57,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:03:57,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:03:57,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:03:57,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:03:57,930 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:03:57,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c [2022-01-10 15:03:57,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e78793980/f31395290dab49ce9d02616c3f81c146/FLAG5a8c59c57 [2022-01-10 15:03:58,279 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:03:58,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c [2022-01-10 15:03:58,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e78793980/f31395290dab49ce9d02616c3f81c146/FLAG5a8c59c57 [2022-01-10 15:03:58,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e78793980/f31395290dab49ce9d02616c3f81c146 [2022-01-10 15:03:58,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:03:58,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:03:58,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:03:58,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:03:58,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:03:58,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9a98d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58, skipping insertion in model container [2022-01-10 15:03:58,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:03:58,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:03:58,844 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/lcm2_valuebound5.c[537,550] [2022-01-10 15:03:58,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:03:58,878 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:03:58,892 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/lcm2_valuebound5.c[537,550] [2022-01-10 15:03:58,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:03:58,907 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:03:58,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58 WrapperNode [2022-01-10 15:03:58,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:03:58,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:03:58,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:03:58,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:03:58,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,933 INFO L137 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 80 [2022-01-10 15:03:58,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:03:58,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:03:58,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:03:58,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:03:58,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:03:58,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:03:58,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:03:58,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:03:58,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (1/1) ... [2022-01-10 15:03:58,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:03:58,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:03:58,996 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 15:03:59,008 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 15:03:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:03:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:03:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:03:59,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:03:59,117 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:03:59,119 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:03:59,317 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:03:59,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:03:59,322 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 15:03:59,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:03:59 BoogieIcfgContainer [2022-01-10 15:03:59,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:03:59,323 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:03:59,323 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:03:59,324 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:03:59,345 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:03:59" (1/1) ... [2022-01-10 15:03:59,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:03:59 BasicIcfg [2022-01-10 15:03:59,431 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:03:59,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:03:59,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:03:59,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:03:59,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:03:58" (1/4) ... [2022-01-10 15:03:59,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1b406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:03:59, skipping insertion in model container [2022-01-10 15:03:59,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:03:58" (2/4) ... [2022-01-10 15:03:59,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1b406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:03:59, skipping insertion in model container [2022-01-10 15:03:59,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:03:59" (3/4) ... [2022-01-10 15:03:59,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1b406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:03:59, skipping insertion in model container [2022-01-10 15:03:59,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:03:59" (4/4) ... [2022-01-10 15:03:59,435 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound5.cTransformedIcfg [2022-01-10 15:03:59,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:03:59,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 15:03:59,468 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:03:59,472 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 15:03:59,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 15:03:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 28 states have internal predecessors, (40), 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 15:03:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 15:03:59,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:03:59,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:03:59,483 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:03:59,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:03:59,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1717401675, now seen corresponding path program 1 times [2022-01-10 15:03:59,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:03:59,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327709133] [2022-01-10 15:03:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:59,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:03:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:03:59,651 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 15:03:59,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:03:59,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327709133] [2022-01-10 15:03:59,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327709133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:03:59,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:03:59,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:03:59,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871549161] [2022-01-10 15:03:59,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:03:59,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:03:59,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:03:59,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:03:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:03:59,677 INFO L87 Difference]: Start difference. First operand has 29 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 28 states have internal predecessors, (40), 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 8.5) internal successors, (17), 2 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 15:03:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:03:59,685 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2022-01-10 15:03:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:03:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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 17 [2022-01-10 15:03:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:03:59,691 INFO L225 Difference]: With dead ends: 55 [2022-01-10 15:03:59,691 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 15:03:59,693 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 15:03:59,695 INFO L933 BasicCegarLoop]: 30 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, 30 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 15:03:59,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:03:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 15:03:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 15:03:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 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 15:03:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-01-10 15:03:59,716 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 17 [2022-01-10 15:03:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:03:59,717 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-01-10 15:03:59,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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 15:03:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-01-10 15:03:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 15:03:59,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:03:59,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:03:59,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:03:59,718 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:03:59,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:03:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash 214648336, now seen corresponding path program 1 times [2022-01-10 15:03:59,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:03:59,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038597995] [2022-01-10 15:03:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:59,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:03:59,758 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:03:59,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663962472] [2022-01-10 15:03:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:03:59,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:03:59,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:03:59,760 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 15:03:59,775 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 15:03:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:03:59,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-10 15:03:59,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:00,463 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 15:04:00,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:04:00,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:00,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038597995] [2022-01-10 15:04:00,464 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:00,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663962472] [2022-01-10 15:04:00,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663962472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:04:00,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:04:00,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 15:04:00,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476248475] [2022-01-10 15:04:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:04:00,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 15:04:00,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 15:04:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-10 15:04:00,471 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 15:04:00,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:00,814 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-01-10 15:04:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 15:04:00,815 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 17 [2022-01-10 15:04:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:00,817 INFO L225 Difference]: With dead ends: 36 [2022-01-10 15:04:00,817 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 15:04:00,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-01-10 15:04:00,818 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 115 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:00,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 21 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:04:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 15:04:00,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-01-10 15:04:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 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 15:04:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-01-10 15:04:00,822 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2022-01-10 15:04:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:00,822 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-01-10 15:04:00,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 15:04:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-01-10 15:04:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 15:04:00,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:00,823 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:00,851 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 15:04:01,023 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 15:04:01,024 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 138745669, now seen corresponding path program 1 times [2022-01-10 15:04:01,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:01,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416007826] [2022-01-10 15:04:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:01,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:01,056 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:01,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109813075] [2022-01-10 15:04:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:01,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:01,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:01,072 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 15:04:01,101 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 15:04:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:01,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 15:04:01,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:01,796 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 15:04:01,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:04:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:02,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:02,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416007826] [2022-01-10 15:04:02,034 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:02,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109813075] [2022-01-10 15:04:02,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109813075] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:04:02,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:04:02,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 15 [2022-01-10 15:04:02,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930615025] [2022-01-10 15:04:02,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:04:02,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 15:04:02,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:02,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 15:04:02,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-01-10 15:04:02,037 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:05,358 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 15:04:07,364 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 15:04:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:08,899 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-01-10 15:04:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 15:04:08,900 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 15:04:08,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:08,900 INFO L225 Difference]: With dead ends: 48 [2022-01-10 15:04:08,900 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 15:04:08,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2022-01-10 15:04:08,901 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 118 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 88 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:08,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 29 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 101 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-01-10 15:04:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 15:04:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-10 15:04:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.135135135135135) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-01-10 15:04:08,906 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 22 [2022-01-10 15:04:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:08,906 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-01-10 15:04:08,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:08,906 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-01-10 15:04:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 15:04:08,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:08,907 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:08,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:09,112 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 15:04:09,112 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash -470048112, now seen corresponding path program 1 times [2022-01-10 15:04:09,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:09,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684548110] [2022-01-10 15:04:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:09,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:09,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:09,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606308141] [2022-01-10 15:04:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:09,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:09,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:09,136 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 15:04:09,137 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 15:04:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:09,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-10 15:04:09,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:10,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:04:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:16,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:16,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684548110] [2022-01-10 15:04:16,938 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:16,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606308141] [2022-01-10 15:04:16,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606308141] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:04:16,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:04:16,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 21 [2022-01-10 15:04:16,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292700897] [2022-01-10 15:04:16,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:04:16,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 15:04:16,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 15:04:16,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2022-01-10 15:04:16,940 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 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 15:04:23,317 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 15:04:25,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:27,328 WARN L534 Checker$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 15:04:29,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:31,335 WARN L534 Checker$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 15:04:33,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:35,531 WARN L534 Checker$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 15:04:37,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:43,156 WARN L534 Checker$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 15:04:45,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:47,164 WARN L534 Checker$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 15:04:55,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:57,602 WARN L534 Checker$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 15:04:59,604 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 15:04:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:59,739 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2022-01-10 15:04:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 15:04:59,739 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 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 27 [2022-01-10 15:04:59,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:59,740 INFO L225 Difference]: With dead ends: 67 [2022-01-10 15:04:59,740 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 15:04:59,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=475, Invalid=1007, Unknown=0, NotChecked=0, Total=1482 [2022-01-10 15:04:59,741 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 113 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 78 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:59,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 64 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 252 Invalid, 14 Unknown, 0 Unchecked, 31.8s Time] [2022-01-10 15:04:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 15:04:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2022-01-10 15:04:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.148936170212766) internal successors, (54), 48 states have internal predecessors, (54), 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 15:04:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-01-10 15:04:59,772 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 27 [2022-01-10 15:04:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:59,772 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-01-10 15:04:59,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 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 15:04:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-01-10 15:04:59,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 15:04:59,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:59,773 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:59,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 15:04:59,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:59,974 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:59,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1858550140, now seen corresponding path program 1 times [2022-01-10 15:04:59,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:59,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684363618] [2022-01-10 15:04:59,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:59,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:59,989 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:59,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316014717] [2022-01-10 15:04:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:59,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:59,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:05:00,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:05:00,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 15:05:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:05:00,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-10 15:05:00,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:05:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:05:07,258 INFO L328 TraceCheckSpWp]: Computing backward predicates...