/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 03:29:48,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 03:29:48,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 03:29:48,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 03:29:48,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 03:29:49,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 03:29:49,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 03:29:49,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 03:29:49,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 03:29:49,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 03:29:49,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 03:29:49,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 03:29:49,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 03:29:49,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 03:29:49,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 03:29:49,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 03:29:49,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 03:29:49,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 03:29:49,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 03:29:49,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 03:29:49,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 03:29:49,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 03:29:49,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 03:29:49,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 03:29:49,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 03:29:49,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 03:29:49,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 03:29:49,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 03:29:49,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 03:29:49,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 03:29:49,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 03:29:49,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 03:29:49,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 03:29:49,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 03:29:49,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 03:29:49,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 03:29:49,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 03:29:49,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 03:29:49,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 03:29:49,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 03:29:49,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 03:29:49,088 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-FA-NoLbe-Delay.epf [2020-11-12 03:29:49,148 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 03:29:49,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 03:29:49,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 03:29:49,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 03:29:49,153 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 03:29:49,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 03:29:49,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 03:29:49,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 03:29:49,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 03:29:49,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 03:29:49,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 03:29:49,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 03:29:49,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 03:29:49,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 03:29:49,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 03:29:49,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 03:29:49,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 03:29:49,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 03:29:49,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 03:29:49,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 03:29:49,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 03:29:49,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 03:29:49,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 03:29:49,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 03:29:49,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 03:29:49,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 03:29:49,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 03:29:49,161 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 03:29:49,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 03:29:49,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 03:29:49,162 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=DELAY_SET 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 03:29:49,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 03:29:49,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 03:29:49,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 03:29:49,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 03:29:49,644 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 03:29:49,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-11-12 03:29:49,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0565fc8e/5de99b2984bb49f1a9fe9976202c2841/FLAG4fa1f1bea [2020-11-12 03:29:50,393 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 03:29:50,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-11-12 03:29:50,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0565fc8e/5de99b2984bb49f1a9fe9976202c2841/FLAG4fa1f1bea [2020-11-12 03:29:50,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0565fc8e/5de99b2984bb49f1a9fe9976202c2841 [2020-11-12 03:29:50,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 03:29:50,680 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 03:29:50,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 03:29:50,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 03:29:50,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 03:29:50,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:29:50" (1/1) ... [2020-11-12 03:29:50,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fcc2fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:50, skipping insertion in model container [2020-11-12 03:29:50,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:29:50" (1/1) ... [2020-11-12 03:29:50,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 03:29:50,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 03:29:51,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 03:29:51,212 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 03:29:51,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 03:29:51,357 INFO L208 MainTranslator]: Completed translation [2020-11-12 03:29:51,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51 WrapperNode [2020-11-12 03:29:51,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 03:29:51,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 03:29:51,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 03:29:51,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 03:29:51,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (1/1) ... [2020-11-12 03:29:51,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (1/1) ... [2020-11-12 03:29:51,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 03:29:51,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 03:29:51,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 03:29:51,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 03:29:51,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (1/1) ... [2020-11-12 03:29:51,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (1/1) ... [2020-11-12 03:29:51,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (1/1) ... [2020-11-12 03:29:51,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (1/1) ... [2020-11-12 03:29:51,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (1/1) ... [2020-11-12 03:29:51,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (1/1) ... [2020-11-12 03:29:51,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (1/1) ... [2020-11-12 03:29:51,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 03:29:51,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 03:29:51,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 03:29:51,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 03:29:51,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (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 [2020-11-12 03:29:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-12 03:29:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 03:29:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 03:29:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 03:29:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2020-11-12 03:29:51,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2020-11-12 03:29:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2020-11-12 03:29:51,622 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2020-11-12 03:29:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 03:29:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 03:29:51,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 03:29:51,625 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 03:29:52,164 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 03:29:52,164 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-11-12 03:29:52,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:29:52 BoogieIcfgContainer [2020-11-12 03:29:52,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 03:29:52,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 03:29:52,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 03:29:52,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 03:29:52,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 03:29:50" (1/3) ... [2020-11-12 03:29:52,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f943d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:29:52, skipping insertion in model container [2020-11-12 03:29:52,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:29:51" (2/3) ... [2020-11-12 03:29:52,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f943d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:29:52, skipping insertion in model container [2020-11-12 03:29:52,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:29:52" (3/3) ... [2020-11-12 03:29:52,176 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2020-11-12 03:29:52,191 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 03:29:52,192 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 03:29:52,196 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-12 03:29:52,197 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 03:29:52,228 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,228 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,228 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,228 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,229 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,229 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,229 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,230 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,230 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,230 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,230 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,231 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,231 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,231 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,232 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,232 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,232 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,232 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,232 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,232 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,233 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,233 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,233 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,234 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,236 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,237 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,237 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,237 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,240 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,240 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,240 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,240 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 03:29:52,247 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-12 03:29:52,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-12 03:29:52,283 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 03:29:52,283 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 03:29:52,283 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 03:29:52,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 03:29:52,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 03:29:52,284 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 03:29:52,284 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 03:29:52,284 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 03:29:52,299 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 137 transitions, 296 flow [2020-11-12 03:29:52,326 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 262 states, 258 states have (on average 2.143410852713178) internal successors, (553), 261 states have internal predecessors, (553), 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) [2020-11-12 03:29:56,811 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 4481ms [2020-11-12 03:29:56,812 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 262 states, 258 states have (on average 2.143410852713178) internal successors, (553), 261 states have internal predecessors, (553), 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) [2020-11-12 03:29:56,814 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 262 states, 215 states have (on average 1.5488372093023255) internal successors, (333), 261 states have internal predecessors, (333), 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) [2020-11-12 03:29:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 215 states have (on average 1.5488372093023255) internal successors, (333), 261 states have internal predecessors, (333), 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) [2020-11-12 03:29:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-12 03:29:56,827 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:56,828 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:56,832 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:56,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:56,839 INFO L82 PathProgramCache]: Analyzing trace with hash -498090479, now seen corresponding path program 1 times [2020-11-12 03:29:56,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:56,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339533728] [2020-11-12 03:29:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:57,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339533728] [2020-11-12 03:29:57,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:57,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 03:29:57,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46739902] [2020-11-12 03:29:57,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-12 03:29:57,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:57,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-12 03:29:57,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 03:29:57,109 INFO L87 Difference]: Start difference. First operand has 262 states, 215 states have (on average 1.5488372093023255) internal successors, (333), 261 states have internal predecessors, (333), 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 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2020-11-12 03:29:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:57,131 INFO L93 Difference]: Finished difference Result 256 states and 301 transitions. [2020-11-12 03:29:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-12 03:29:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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 84 [2020-11-12 03:29:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:57,144 INFO L225 Difference]: With dead ends: 256 [2020-11-12 03:29:57,144 INFO L226 Difference]: Without dead ends: 126 [2020-11-12 03:29:57,146 INFO L749 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 [2020-11-12 03:29:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-12 03:29:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-11-12 03:29:57,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 125 states have internal predecessors, (147), 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) [2020-11-12 03:29:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-11-12 03:29:57,192 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 84 [2020-11-12 03:29:57,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:57,194 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-11-12 03:29:57,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2020-11-12 03:29:57,194 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-11-12 03:29:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-12 03:29:57,197 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:57,198 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:57,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 03:29:57,198 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:57,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1522784400, now seen corresponding path program 1 times [2020-11-12 03:29:57,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:57,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54046751] [2020-11-12 03:29:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 03:29:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 03:29:57,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54046751] [2020-11-12 03:29:57,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 03:29:57,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 03:29:57,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191772401] [2020-11-12 03:29:57,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 03:29:57,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 03:29:57,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 03:29:57,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 03:29:57,418 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2020-11-12 03:29:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 03:29:57,494 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2020-11-12 03:29:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 03:29:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 84 [2020-11-12 03:29:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 03:29:57,505 INFO L225 Difference]: With dead ends: 126 [2020-11-12 03:29:57,505 INFO L226 Difference]: Without dead ends: 123 [2020-11-12 03:29:57,506 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-12 03:29:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-12 03:29:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-11-12 03:29:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 122 states have internal predecessors, (143), 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) [2020-11-12 03:29:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-11-12 03:29:57,526 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 84 [2020-11-12 03:29:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 03:29:57,529 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-11-12 03:29:57,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2020-11-12 03:29:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-11-12 03:29:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-12 03:29:57,531 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 03:29:57,531 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 03:29:57,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 03:29:57,532 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 03:29:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 03:29:57,537 INFO L82 PathProgramCache]: Analyzing trace with hash 2076456658, now seen corresponding path program 1 times [2020-11-12 03:29:57,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 03:29:57,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814148713] [2020-11-12 03:29:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 03:29:57,612 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-12 03:29:57,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656282346] [2020-11-12 03:29:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown