/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 15:11:11,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 15:11:11,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 15:11:11,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 15:11:11,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 15:11:11,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 15:11:11,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 15:11:11,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 15:11:11,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 15:11:11,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 15:11:11,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 15:11:11,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 15:11:11,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 15:11:11,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 15:11:11,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 15:11:11,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 15:11:11,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-10 15:11:11,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-10 15:11:11,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-10 15:11:11,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-10 15:11:11,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-10 15:11:11,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-10 15:11:11,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-10 15:11:11,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-10 15:11:11,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-10 15:11:11,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 15:11:11,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 15:11:11,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 15:11:11,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random7777.epf [2021-07-10 15:11:11,860 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 15:11:11,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 15:11:11,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 15:11:11,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 15:11:11,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 15:11:11,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 15:11:11,861 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 15:11:11,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 15:11:11,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 15:11:11,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 15:11:11,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 15:11:11,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 15:11:11,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 15:11:11,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 15:11:11,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 15:11:11,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 15:11:11,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 15:11:11,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 15:11:11,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 15:11:11,864 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-10 15:11:11,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 15:11:11,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 15:11:11,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 15:11:11,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 15:11:11,864 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 15:11:11,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-10 15:11:11,864 INFO L138 SettingsManager]: * Random seed used by POR DFS order=7777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 15:11:12,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 15:11:12,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 15:11:12,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 15:11:12,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-10 15:11:12,089 INFO L275 PluginConnector]: CDTParser initialized [2021-07-10 15:11:12,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2021-07-10 15:11:12,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d6311412/188b99374bb14d3fb3a1e7cdbcceb3a6/FLAG2f1a1b8eb [2021-07-10 15:11:12,563 INFO L306 CDTParser]: Found 1 translation units. [2021-07-10 15:11:12,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2021-07-10 15:11:12,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d6311412/188b99374bb14d3fb3a1e7cdbcceb3a6/FLAG2f1a1b8eb [2021-07-10 15:11:12,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d6311412/188b99374bb14d3fb3a1e7cdbcceb3a6 [2021-07-10 15:11:12,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 15:11:12,594 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-10 15:11:12,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-10 15:11:12,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-10 15:11:12,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-10 15:11:12,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:11:12" (1/1) ... [2021-07-10 15:11:12,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39386636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:12, skipping insertion in model container [2021-07-10 15:11:12,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:11:12" (1/1) ... [2021-07-10 15:11:12,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-10 15:11:12,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-10 15:11:12,795 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i[938,951] [2021-07-10 15:11:12,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-10 15:11:12,943 INFO L203 MainTranslator]: Completed pre-run [2021-07-10 15:11:12,951 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i[938,951] [2021-07-10 15:11:12,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-10 15:11:13,008 INFO L208 MainTranslator]: Completed translation [2021-07-10 15:11:13,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13 WrapperNode [2021-07-10 15:11:13,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-10 15:11:13,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 15:11:13,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 15:11:13,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 15:11:13,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... [2021-07-10 15:11:13,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... [2021-07-10 15:11:13,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 15:11:13,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 15:11:13,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 15:11:13,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 15:11:13,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... [2021-07-10 15:11:13,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... [2021-07-10 15:11:13,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... [2021-07-10 15:11:13,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... [2021-07-10 15:11:13,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... [2021-07-10 15:11:13,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... [2021-07-10 15:11:13,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... [2021-07-10 15:11:13,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 15:11:13,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 15:11:13,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 15:11:13,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 15:11:13,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 15:11:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-10 15:11:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-10 15:11:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-10 15:11:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-10 15:11:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2021-07-10 15:11:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2021-07-10 15:11:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2021-07-10 15:11:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2021-07-10 15:11:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-10 15:11:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 15:11:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 15:11:13,150 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 15:11:13,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 15:11:13,682 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-07-10 15:11:13,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:11:13 BoogieIcfgContainer [2021-07-10 15:11:13,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 15:11:13,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 15:11:13,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 15:11:13,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 15:11:13,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:11:12" (1/3) ... [2021-07-10 15:11:13,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5343d727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:11:13, skipping insertion in model container [2021-07-10 15:11:13,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:11:13" (2/3) ... [2021-07-10 15:11:13,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5343d727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:11:13, skipping insertion in model container [2021-07-10 15:11:13,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:11:13" (3/3) ... [2021-07-10 15:11:13,688 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2021-07-10 15:11:13,696 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 15:11:13,696 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 15:11:13,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-07-10 15:11:13,697 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 15:11:13,723 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,724 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,724 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,724 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,724 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,724 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,724 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,724 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,724 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,725 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,726 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,726 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,726 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,726 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,726 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,727 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,727 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,727 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,728 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,729 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,729 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,729 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,729 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-10 15:11:13,734 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-10 15:11:13,749 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-10 15:11:13,803 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 15:11:13,804 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 15:11:13,804 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 15:11:13,804 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 15:11:13,804 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 15:11:13,804 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 15:11:13,807 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 15:11:13,807 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 15:11:13,908 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-10 15:11:13,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:11:13,912 INFO L82 PathProgramCache]: Analyzing trace with hash 268490943, now seen corresponding path program 1 times [2021-07-10 15:11:13,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:11:13,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691014021] [2021-07-10 15:11:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:11:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:11:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:11:14,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:11:14,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691014021] [2021-07-10 15:11:14,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691014021] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 15:11:14,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 15:11:14,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-10 15:11:14,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727575874] [2021-07-10 15:11:14,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-10 15:11:14,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:11:14,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-10 15:11:14,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-10 15:11:14,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:14,103 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:11:14,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-07-10 15:11:14,106 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:14,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 15:11:14,125 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-10 15:11:14,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:11:14,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1324623288, now seen corresponding path program 1 times [2021-07-10 15:11:14,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:11:14,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465947941] [2021-07-10 15:11:14,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:11:14,162 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-07-10 15:11:14,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351682518] [2021-07-10 15:11:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:11:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:11:14,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 26 conjunts are in the unsatisfiable core [2021-07-10 15:11:14,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:11:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:11:14,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:11:14,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465947941] [2021-07-10 15:11:14,716 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-07-10 15:11:14,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351682518] [2021-07-10 15:11:14,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351682518] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 15:11:14,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 15:11:14,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-10 15:11:14,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341752798] [2021-07-10 15:11:14,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-10 15:11:14,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:11:14,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-10 15:11:14,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-07-10 15:11:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:14,719 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:11:14,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 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) [2021-07-10 15:11:14,719 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:14,719 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 15:11:15,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:11:15,553 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-10 15:11:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:11:15,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1520699278, now seen corresponding path program 1 times [2021-07-10 15:11:15,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:11:15,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685248482] [2021-07-10 15:11:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:11:15,573 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-07-10 15:11:15,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205591338] [2021-07-10 15:11:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:11:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:11:15,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 43 conjunts are in the unsatisfiable core [2021-07-10 15:11:15,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:11:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:11:16,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:11:16,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685248482] [2021-07-10 15:11:16,299 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-07-10 15:11:16,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205591338] [2021-07-10 15:11:16,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205591338] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 15:11:16,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 15:11:16,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-07-10 15:11:16,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39148666] [2021-07-10 15:11:16,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-10 15:11:16,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:11:16,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-10 15:11:16,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-07-10 15:11:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:16,304 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:11:16,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 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) [2021-07-10 15:11:16,305 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:16,305 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 15:11:16,305 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:17,216 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-07-10 15:11:17,389 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-07-10 15:11:17,562 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-07-10 15:11:17,754 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2021-07-10 15:11:17,929 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2021-07-10 15:11:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:11:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 15:11:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 15:11:18,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:11:18,301 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-10 15:11:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:11:18,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1778093718, now seen corresponding path program 1 times [2021-07-10 15:11:18,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:11:18,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251173366] [2021-07-10 15:11:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:11:18,330 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-07-10 15:11:18,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504306965] [2021-07-10 15:11:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:11:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:11:18,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-10 15:11:18,539 INFO L286 TraceCheckSpWp]: Computing forward predicates...