/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 21:36:27,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 21:36:27,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 21:36:27,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 21:36:27,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 21:36:27,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 21:36:27,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 21:36:27,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 21:36:27,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 21:36:27,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 21:36:27,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 21:36:27,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 21:36:27,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 21:36:27,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 21:36:27,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 21:36:27,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 21:36:27,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 21:36:27,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 21:36:27,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 21:36:27,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 21:36:27,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 21:36:27,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 21:36:27,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 21:36:27,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 21:36:27,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 21:36:27,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 21:36:27,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 21:36:27,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 21:36:27,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 21:36:27,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 21:36:27,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 21:36:27,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 21:36:27,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 21:36:27,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 21:36:27,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 21:36:27,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 21:36:27,551 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-SemanticLbe.epf [2020-11-11 21:36:27,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 21:36:27,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 21:36:27,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 21:36:27,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 21:36:27,615 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 21:36:27,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 21:36:27,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 21:36:27,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 21:36:27,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 21:36:27,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 21:36:27,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 21:36:27,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 21:36:27,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 21:36:27,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 21:36:27,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 21:36:27,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 21:36:27,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 21:36:27,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 21:36:27,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 21:36:27,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 21:36:27,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 21:36:27,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 21:36:27,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 21:36:27,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 21:36:27,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 21:36:27,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 21:36:27,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 21:36:27,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 21:36:27,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 21:36:28,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 21:36:28,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 21:36:28,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 21:36:28,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 21:36:28,061 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 21:36:28,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-11-11 21:36:28,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0555d04cf/d0884c1352d94aa3a718225e69e3b0cf/FLAGe0765da6c [2020-11-11 21:36:28,953 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 21:36:28,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-11-11 21:36:28,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0555d04cf/d0884c1352d94aa3a718225e69e3b0cf/FLAGe0765da6c [2020-11-11 21:36:29,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0555d04cf/d0884c1352d94aa3a718225e69e3b0cf [2020-11-11 21:36:29,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 21:36:29,191 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 21:36:29,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 21:36:29,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 21:36:29,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 21:36:29,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:29,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683dfe92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29, skipping insertion in model container [2020-11-11 21:36:29,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:29,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 21:36:29,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 21:36:29,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 21:36:29,712 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 21:36:29,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 21:36:29,970 INFO L208 MainTranslator]: Completed translation [2020-11-11 21:36:29,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29 WrapperNode [2020-11-11 21:36:29,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 21:36:29,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 21:36:29,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 21:36:29,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 21:36:29,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:30,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:30,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 21:36:30,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 21:36:30,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 21:36:30,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 21:36:30,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:30,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:30,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:30,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:30,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:30,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:30,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (1/1) ... [2020-11-11 21:36:30,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 21:36:30,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 21:36:30,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 21:36:30,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 21:36:30,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (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 [2020-11-11 21:36:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-11 21:36:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 21:36:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 21:36:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 21:36:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2020-11-11 21:36:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2020-11-11 21:36:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2020-11-11 21:36:30,272 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2020-11-11 21:36:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 21:36:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 21:36:30,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 21:36:30,278 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 21:36:31,055 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 21:36:31,055 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-11-11 21:36:31,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 09:36:31 BoogieIcfgContainer [2020-11-11 21:36:31,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 21:36:31,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 21:36:31,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 21:36:31,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 21:36:31,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 09:36:29" (1/3) ... [2020-11-11 21:36:31,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5154cf6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 09:36:31, skipping insertion in model container [2020-11-11 21:36:31,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:36:29" (2/3) ... [2020-11-11 21:36:31,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5154cf6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 09:36:31, skipping insertion in model container [2020-11-11 21:36:31,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 09:36:31" (3/3) ... [2020-11-11 21:36:31,072 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2020-11-11 21:36:31,088 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 21:36:31,089 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 21:36:31,093 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-11 21:36:31,094 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 21:36:31,146 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,146 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,146 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,147 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,147 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,147 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,147 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,147 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,148 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,148 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,148 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,148 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,149 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,149 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,149 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,149 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,150 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,150 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,150 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,150 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,150 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,151 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,151 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,151 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,153 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,154 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,154 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,154 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,157 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,157 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,158 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,158 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 21:36:31,168 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-11 21:36:31,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-11 21:36:31,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 21:36:31,206 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 21:36:31,206 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 21:36:31,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 21:36:31,207 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 21:36:31,207 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 21:36:31,207 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 21:36:31,207 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 21:36:31,222 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 21:36:31,224 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 137 transitions, 296 flow [2020-11-11 21:36:31,228 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 137 transitions, 296 flow [2020-11-11 21:36:31,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 296 flow [2020-11-11 21:36:31,294 INFO L129 PetriNetUnfolder]: 16/137 cut-off events. [2020-11-11 21:36:31,298 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-11 21:36:31,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 137 events. 16/137 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2020-11-11 21:36:31,310 INFO L116 LiptonReduction]: Number of co-enabled transitions 280 [2020-11-11 21:36:36,030 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-11 21:36:39,752 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2020-11-11 21:36:40,101 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-11-11 21:36:40,797 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-11-11 21:36:41,658 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-11-11 21:36:41,959 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-11-11 21:36:44,927 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-11-11 21:36:45,523 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-11-11 21:36:48,856 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-11-11 21:36:50,493 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 56 [2020-11-11 21:36:50,803 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-11-11 21:36:50,921 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-11-11 21:36:51,274 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-11-11 21:36:51,420 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-11-11 21:36:51,785 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-11-11 21:36:51,946 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-11-11 21:36:52,242 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-11-11 21:36:52,378 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-11 21:36:52,665 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-11-11 21:36:52,797 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-11 21:36:53,223 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-11-11 21:36:53,405 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-11-11 21:36:53,890 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-11-11 21:36:54,055 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-11-11 21:36:54,345 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-11-11 21:36:54,568 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-11-11 21:36:54,874 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-11 21:36:57,928 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-11-11 21:36:58,596 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-11 21:37:05,168 WARN L193 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-11-11 21:37:06,337 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 79 [2020-11-11 21:37:08,314 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-11-11 21:37:08,792 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-11 21:37:12,463 WARN L193 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-11-11 21:37:13,415 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-11-11 21:37:15,357 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-11-11 21:37:15,831 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-11 21:37:17,322 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2020-11-11 21:37:17,923 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-11 21:37:21,488 WARN L193 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-11-11 21:37:23,038 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 58 [2020-11-11 21:37:30,093 WARN L193 SmtUtils]: Spent 7.05 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-11-11 21:37:34,573 WARN L193 SmtUtils]: Spent 4.47 s on a formula simplification that was a NOOP. DAG size: 79 [2020-11-11 21:37:53,894 WARN L193 SmtUtils]: Spent 19.32 s on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-11-11 21:37:59,513 WARN L193 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 65 [2020-11-11 21:38:28,276 WARN L193 SmtUtils]: Spent 28.76 s on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-11-11 21:38:42,806 WARN L193 SmtUtils]: Spent 14.52 s on a formula simplification that was a NOOP. DAG size: 89 [2020-11-11 21:38:52,453 WARN L193 SmtUtils]: Spent 9.65 s on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-11-11 21:38:55,396 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification that was a NOOP. DAG size: 57 [2020-11-11 21:39:02,716 WARN L193 SmtUtils]: Spent 7.32 s on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-11-11 21:39:06,642 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 21:39:06,736 INFO L131 LiptonReduction]: Checked pairs total: 1079 [2020-11-11 21:39:06,737 INFO L133 LiptonReduction]: Total number of compositions: 167 [2020-11-11 21:39:06,747 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2020-11-11 21:39:06,766 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 72 states, 68 states have (on average 2.25) internal successors, (153), 71 states have internal predecessors, (153), 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) [2020-11-11 21:39:06,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 68 states have (on average 2.25) internal successors, (153), 71 states have internal predecessors, (153), 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) [2020-11-11 21:39:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 21:39:06,787 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 21:39:06,789 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 21:39:06,795 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 21:39:06,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 21:39:06,810 INFO L82 PathProgramCache]: Analyzing trace with hash -199064834, now seen corresponding path program 1 times [2020-11-11 21:39:06,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 21:39:06,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406002911] [2020-11-11 21:39:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 21:39:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 21:39:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 21:39:07,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406002911] [2020-11-11 21:39:07,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 21:39:07,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-11 21:39:07,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325490707] [2020-11-11 21:39:07,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 21:39:07,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 21:39:07,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 21:39:07,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 21:39:07,248 INFO L87 Difference]: Start difference. First operand has 72 states, 68 states have (on average 2.25) internal successors, (153), 71 states have internal predecessors, (153), 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 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2020-11-11 21:39:08,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 21:39:08,425 INFO L93 Difference]: Finished difference Result 72 states and 152 transitions. [2020-11-11 21:39:08,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 21:39:08,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2020-11-11 21:39:08,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 21:39:08,452 INFO L225 Difference]: With dead ends: 72 [2020-11-11 21:39:08,453 INFO L226 Difference]: Without dead ends: 59 [2020-11-11 21:39:08,454 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 [2020-11-11 21:39:08,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-11 21:39:08,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-11 21:39:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 56 states have (on average 2.267857142857143) internal successors, (127), 58 states have internal predecessors, (127), 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) [2020-11-11 21:39:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 127 transitions. [2020-11-11 21:39:08,498 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 127 transitions. Word has length 15 [2020-11-11 21:39:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 21:39:08,500 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 127 transitions. [2020-11-11 21:39:08,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2020-11-11 21:39:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 127 transitions. [2020-11-11 21:39:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 21:39:08,501 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 21:39:08,501 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 21:39:08,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 21:39:08,502 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 21:39:08,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 21:39:08,503 INFO L82 PathProgramCache]: Analyzing trace with hash -170436644, now seen corresponding path program 1 times [2020-11-11 21:39:08,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 21:39:08,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452834819] [2020-11-11 21:39:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 21:39:08,540 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-11 21:39:08,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841520934] [2020-11-11 21:39:08,540 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