/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_BITWISE.epf -i ../../../trunk/examples/svcomp/array-fpi/nsqm-if.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:57:01,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:57:01,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:57:01,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 09:57:01,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 09:57:01,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 09:57:01,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 09:57:01,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 09:57:01,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 09:57:01,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 09:57:01,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 09:57:01,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 09:57:01,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:57:01,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:57:01,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:57:01,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:57:01,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:57:01,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:57:01,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:57:01,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:57:01,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:57:01,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:57:01,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:57:01,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:57:01,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 09:57:01,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 09:57:01,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 09:57:01,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 09:57:01,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 09:57:01,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 09:57:01,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 09:57:01,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 09:57:01,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 09:57:01,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 09:57:01,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 09:57:01,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 09:57:01,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 09:57:01,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 09:57:01,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:57:01,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:57:01,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:57:01,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:57:01,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:57:01,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:57:01,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:57:01,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:57:01,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:57:01,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:57:01,639 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:57:01,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:57:01,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:57:01,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:57:01,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:57:01,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:57:01,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:57:01,641 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:57:01,641 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:57:01,641 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:57:01,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:57:01,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:57:01,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:57:01,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:57:01,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:57:01,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:57:01,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:57:01,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:57:01,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:57:01,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:57:01,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:57:01,644 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:57:01,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:57:01,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:57:01,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:57:01,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:57:01,645 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:57:01,645 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:57:01,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:57:01,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:57:01,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:57:01,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:57:01,876 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:57:01,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/nsqm-if.c [2022-01-10 09:57:01,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45186f68f/29f13d3c5e5d48bb93dca748032819df/FLAGac3afb592 [2022-01-10 09:57:02,299 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:57:02,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqm-if.c [2022-01-10 09:57:02,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45186f68f/29f13d3c5e5d48bb93dca748032819df/FLAGac3afb592 [2022-01-10 09:57:02,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45186f68f/29f13d3c5e5d48bb93dca748032819df [2022-01-10 09:57:02,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:57:02,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:57:02,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:57:02,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:57:02,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:57:02,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ff1f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02, skipping insertion in model container [2022-01-10 09:57:02,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:57:02,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:57:02,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqm-if.c[590,603] [2022-01-10 09:57:02,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:57:02,516 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:57:02,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqm-if.c[590,603] [2022-01-10 09:57:02,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:57:02,564 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:57:02,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02 WrapperNode [2022-01-10 09:57:02,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:57:02,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:57:02,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:57:02,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:57:02,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,610 INFO L137 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-01-10 09:57:02,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:57:02,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:57:02,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:57:02,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:57:02,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:57:02,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:57:02,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:57:02,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:57:02,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (1/1) ... [2022-01-10 09:57:02,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:57:02,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:57:02,692 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 09:57:02,699 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 09:57:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:57:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:57:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 09:57:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 09:57:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:57:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:57:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 09:57:02,781 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:57:02,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:57:03,062 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:57:03,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:57:03,067 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 09:57:03,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:57:03 BoogieIcfgContainer [2022-01-10 09:57:03,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:57:03,069 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:57:03,069 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:57:03,070 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:57:03,073 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:57:03" (1/1) ... [2022-01-10 09:57:03,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:57:03 BasicIcfg [2022-01-10 09:57:03,198 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:57:03,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:57:03,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:57:03,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:57:03,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:57:02" (1/4) ... [2022-01-10 09:57:03,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5dc303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:57:03, skipping insertion in model container [2022-01-10 09:57:03,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:57:02" (2/4) ... [2022-01-10 09:57:03,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5dc303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:57:03, skipping insertion in model container [2022-01-10 09:57:03,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:57:03" (3/4) ... [2022-01-10 09:57:03,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5dc303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:57:03, skipping insertion in model container [2022-01-10 09:57:03,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:57:03" (4/4) ... [2022-01-10 09:57:03,205 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqm-if.cTransformedIcfg [2022-01-10 09:57:03,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:57:03,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 09:57:03,251 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:57:03,257 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 09:57:03,258 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 09:57:03,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 09:57:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 09:57:03,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:57:03,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:57:03,274 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:57:03,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:57:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1663889424, now seen corresponding path program 1 times [2022-01-10 09:57:03,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:57:03,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762394505] [2022-01-10 09:57:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:57:03,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:57:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:57:03,493 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 09:57:03,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:57:03,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762394505] [2022-01-10 09:57:03,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762394505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:57:03,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:57:03,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:57:03,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638770133] [2022-01-10 09:57:03,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:57:03,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:57:03,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:57:03,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:57:03,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:57:03,539 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 09:57:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:57:03,554 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-01-10 09:57:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:57:03,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-01-10 09:57:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:57:03,564 INFO L225 Difference]: With dead ends: 42 [2022-01-10 09:57:03,564 INFO L226 Difference]: Without dead ends: 19 [2022-01-10 09:57:03,566 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 09:57:03,573 INFO L933 BasicCegarLoop]: 28 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, 28 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 09:57:03,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:57:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-10 09:57:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-10 09:57:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 09:57:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-10 09:57:03,605 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2022-01-10 09:57:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:57:03,606 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-10 09:57:03,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 09:57:03,607 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-10 09:57:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 09:57:03,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:57:03,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:57:03,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:57:03,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:57:03,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:57:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1711127090, now seen corresponding path program 1 times [2022-01-10 09:57:03,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:57:03,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147213671] [2022-01-10 09:57:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:57:03,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:57:03,690 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:57:03,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474324423] [2022-01-10 09:57:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:57:03,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:57:03,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:57:03,693 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 09:57:03,699 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 09:57:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:57:03,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 09:57:03,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:57:04,423 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 09:57:04,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:57:04,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:57:04,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147213671] [2022-01-10 09:57:04,424 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:57:04,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474324423] [2022-01-10 09:57:04,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474324423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:57:04,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:57:04,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:57:04,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219105571] [2022-01-10 09:57:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:57:04,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:57:04,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:57:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:57:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:57:04,428 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 09:57:06,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:57:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:57:06,849 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2022-01-10 09:57:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:57:06,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-01-10 09:57:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:57:06,853 INFO L225 Difference]: With dead ends: 49 [2022-01-10 09:57:06,853 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 09:57:06,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 09:57:06,854 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 09:57:06,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 33 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 09:57:06,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 09:57:06,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2022-01-10 09:57:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 09:57:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 09:57:06,859 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-10 09:57:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:57:06,860 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 09:57:06,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 09:57:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 09:57:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 09:57:06,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:57:06,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:57:06,884 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 09:57:07,082 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 09:57:07,082 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:57:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:57:07,083 INFO L85 PathProgramCache]: Analyzing trace with hash 875960336, now seen corresponding path program 1 times [2022-01-10 09:57:07,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:57:07,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978786604] [2022-01-10 09:57:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:57:07,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:57:07,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:57:07,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941745645] [2022-01-10 09:57:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:57:07,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:57:07,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:57:07,125 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 09:57:07,153 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 09:57:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:57:07,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 09:57:07,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:57:07,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:07,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:07,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 59 [2022-01-10 09:57:08,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:08,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:57:08,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:08,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:57:09,048 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 09:57:09,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 613 treesize of output 445 [2022-01-10 09:57:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:57:12,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:57:12,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:57:12,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978786604] [2022-01-10 09:57:12,231 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:57:12,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941745645] [2022-01-10 09:57:12,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941745645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:57:12,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:57:12,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 09:57:12,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774537638] [2022-01-10 09:57:12,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:57:12,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 09:57:12,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:57:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 09:57:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 09:57:12,233 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 09:57:14,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:57:16,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:57:19,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:57:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:57:20,723 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-01-10 09:57:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 09:57:20,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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) Word has length 18 [2022-01-10 09:57:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:57:20,728 INFO L225 Difference]: With dead ends: 40 [2022-01-10 09:57:20,728 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 09:57:20,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2022-01-10 09:57:20,730 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 72 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-01-10 09:57:20,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 40 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 64 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2022-01-10 09:57:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 09:57:20,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2022-01-10 09:57:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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 09:57:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-01-10 09:57:20,736 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2022-01-10 09:57:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:57:20,737 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-01-10 09:57:20,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 09:57:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-01-10 09:57:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 09:57:20,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:57:20,738 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:57:20,743 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 09:57:20,943 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 09:57:20,943 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:57:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:57:20,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1245794439, now seen corresponding path program 1 times [2022-01-10 09:57:20,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:57:20,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813033695] [2022-01-10 09:57:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:57:20,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:57:21,022 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:57:21,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021992978] [2022-01-10 09:57:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:57:21,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:57:21,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:57:21,024 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 09:57:21,025 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 09:57:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:57:21,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 09:57:21,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:57:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:57:21,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:57:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:57:36,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:57:36,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813033695] [2022-01-10 09:57:36,683 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:57:36,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021992978] [2022-01-10 09:57:36,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021992978] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:57:36,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:57:36,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-10 09:57:36,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000404087] [2022-01-10 09:57:36,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:57:36,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 09:57:36,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:57:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 09:57:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2022-01-10 09:57:36,686 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:57:38,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:57:39,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:57:39,862 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2022-01-10 09:57:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 09:57:39,865 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-10 09:57:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:57:39,866 INFO L225 Difference]: With dead ends: 69 [2022-01-10 09:57:39,866 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 09:57:39,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2022-01-10 09:57:39,868 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 09:57:39,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 59 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 87 Invalid, 1 Unknown, 30 Unchecked, 3.2s Time] [2022-01-10 09:57:39,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 09:57:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2022-01-10 09:57:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 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 09:57:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-01-10 09:57:39,874 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 21 [2022-01-10 09:57:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:57:39,874 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-01-10 09:57:39,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:57:39,875 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-01-10 09:57:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 09:57:39,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:57:39,875 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:57:39,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 09:57:40,081 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 09:57:40,081 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:57:40,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:57:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2042877812, now seen corresponding path program 1 times [2022-01-10 09:57:40,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:57:40,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757163498] [2022-01-10 09:57:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:57:40,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:57:40,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:57:40,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020431432] [2022-01-10 09:57:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:57:40,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:57:40,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:57:40,127 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 09:57:40,134 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 09:57:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:57:41,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-10 09:57:41,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:57:41,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-01-10 09:57:41,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:41,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:41,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2022-01-10 09:57:42,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:42,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:42,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 59 [2022-01-10 09:57:43,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:43,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:43,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:43,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:43,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:43,729 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 09:57:43,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 96 [2022-01-10 09:57:46,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:46,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:57:46,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:57:46,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:57:53,367 WARN L228 SmtUtils]: Spent 7.30s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-10 09:57:53,367 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 09:57:53,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1067 treesize of output 887