/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/indp4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:55:23,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:55:23,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:55:23,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 09:55:23,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 09:55:23,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 09:55:23,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 09:55:23,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 09:55:23,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 09:55:23,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 09:55:23,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 09:55:23,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 09:55:23,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:55:23,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:55:23,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:55:23,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:55:23,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:55:23,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:55:23,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:55:23,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:55:23,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:55:23,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:55:23,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:55:23,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:55:23,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 09:55:23,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 09:55:23,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 09:55:23,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 09:55:23,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 09:55:23,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 09:55:23,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 09:55:23,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 09:55:23,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 09:55:23,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:55:23,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:55:23,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:55:23,595 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 09:55:23,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:55:23,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:55:23,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:55:23,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:55:23,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:55:23,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:55:23,624 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:55:23,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:55:23,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:55:23,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:55:23,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:55:23,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:55:23,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:55:23,627 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:55:23,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:55:23,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:55:23,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:55:23,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:55:23,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:55:23,812 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:55:23,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4.c [2022-01-10 09:55:23,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560f6122b/e2b636e7f8234696a0487f7379df6cf0/FLAG6d6189618 [2022-01-10 09:55:24,224 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:55:24,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp4.c [2022-01-10 09:55:24,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560f6122b/e2b636e7f8234696a0487f7379df6cf0/FLAG6d6189618 [2022-01-10 09:55:24,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560f6122b/e2b636e7f8234696a0487f7379df6cf0 [2022-01-10 09:55:24,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:55:24,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:55:24,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:55:24,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:55:24,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:55:24,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@253f1f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24, skipping insertion in model container [2022-01-10 09:55:24,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:55:24,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:55:24,382 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/indp4.c[588,601] [2022-01-10 09:55:24,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:55:24,413 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:55:24,422 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/indp4.c[588,601] [2022-01-10 09:55:24,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:55:24,448 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:55:24,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24 WrapperNode [2022-01-10 09:55:24,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:55:24,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:55:24,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:55:24,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:55:24,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,485 INFO L137 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-01-10 09:55:24,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:55:24,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:55:24,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:55:24,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:55:24,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:55:24,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:55:24,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:55:24,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:55:24,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:24,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:55:24,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:55:24,540 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 09:55:24,542 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 09:55:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:55:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:55:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 09:55:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 09:55:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:55:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:55:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 09:55:24,604 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:55:24,605 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:55:24,885 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:55:24,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:55:24,889 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-10 09:55:24,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:55:24 BoogieIcfgContainer [2022-01-10 09:55:24,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:55:24,891 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:55:24,891 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:55:24,898 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:55:24,900 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:55:24" (1/1) ... [2022-01-10 09:55:25,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:55:25 BasicIcfg [2022-01-10 09:55:25,026 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:55:25,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:55:25,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:55:25,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:55:25,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:55:24" (1/4) ... [2022-01-10 09:55:25,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792a4026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:55:25, skipping insertion in model container [2022-01-10 09:55:25,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:24" (2/4) ... [2022-01-10 09:55:25,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792a4026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:55:25, skipping insertion in model container [2022-01-10 09:55:25,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:55:24" (3/4) ... [2022-01-10 09:55:25,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792a4026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:55:25, skipping insertion in model container [2022-01-10 09:55:25,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:55:25" (4/4) ... [2022-01-10 09:55:25,041 INFO L111 eAbstractionObserver]: Analyzing ICFG indp4.cTransformedIcfg [2022-01-10 09:55:25,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:55:25,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 09:55:25,084 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:55:25,090 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 09:55:25,090 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 09:55:25,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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 09:55:25,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 09:55:25,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:55:25,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:55:25,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:55:25,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:55:25,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1760602481, now seen corresponding path program 1 times [2022-01-10 09:55:25,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:55:25,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342369924] [2022-01-10 09:55:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:55:25,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:55:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:55:25,255 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 09:55:25,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:55:25,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342369924] [2022-01-10 09:55:25,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342369924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:55:25,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:55:25,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:55:25,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716893778] [2022-01-10 09:55:25,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:55:25,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:55:25,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:55:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:55:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:55:25,283 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 09:55:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:55:25,295 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-01-10 09:55:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:55:25,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2022-01-10 09:55:25,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:55:25,301 INFO L225 Difference]: With dead ends: 44 [2022-01-10 09:55:25,302 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 09:55:25,303 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 09:55:25,307 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 09:55:25,308 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 09:55:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 09:55:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 09:55:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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 09:55:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-01-10 09:55:25,328 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2022-01-10 09:55:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:55:25,329 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-01-10 09:55:25,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 09:55:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-01-10 09:55:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 09:55:25,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:55:25,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:55:25,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:55:25,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:55:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:55:25,334 INFO L85 PathProgramCache]: Analyzing trace with hash -181613805, now seen corresponding path program 1 times [2022-01-10 09:55:25,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:55:25,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625601409] [2022-01-10 09:55:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:55:25,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:55:25,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:55:25,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127957967] [2022-01-10 09:55:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:55:25,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:55:25,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:55:25,406 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 09:55:25,423 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 09:55:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:55:25,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 09:55:25,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:55:25,632 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 09:55:25,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:55:25,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:55:25,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625601409] [2022-01-10 09:55:25,633 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:55:25,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127957967] [2022-01-10 09:55:25,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127957967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:55:25,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:55:25,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:55:25,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209274396] [2022-01-10 09:55:25,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:55:25,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:55:25,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:55:25,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:55:25,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:55:25,635 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 09:55:28,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 09:55:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:55:28,664 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-01-10 09:55:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:55:28,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2022-01-10 09:55:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:55:28,671 INFO L225 Difference]: With dead ends: 49 [2022-01-10 09:55:28,671 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 09:55:28,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 09:55:28,672 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:55:28,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 29 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 09:55:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 09:55:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2022-01-10 09:55:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 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 09:55:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-10 09:55:28,677 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-01-10 09:55:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:55:28,677 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-10 09:55:28,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 09:55:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-10 09:55:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 09:55:28,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:55:28,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:55:28,698 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 09:55:28,891 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 09:55:28,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:55:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:55:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 889479949, now seen corresponding path program 1 times [2022-01-10 09:55:28,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:55:28,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195087430] [2022-01-10 09:55:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:55:28,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:55:28,950 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:55:28,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064441826] [2022-01-10 09:55:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:55:28,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:55:28,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:55:28,953 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 09:55:28,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process