/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:41:42,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:41:42,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:41:43,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:41:43,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:41:43,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:41:43,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:41:43,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:41:43,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:41:43,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:41:43,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:41:43,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:41:43,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:41:43,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:41:43,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:41:43,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:41:43,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:41:43,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:41:43,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:41:43,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:41:43,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:41:43,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:41:43,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:41:43,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:41:43,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:41:43,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:41:43,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:41:43,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:41:43,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:41:43,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:41:43,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:41:43,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:41:43,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:41:43,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:41:43,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:41:43,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:41:43,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 11:41:43,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:41:43,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:41:43,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:41:43,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:41:43,140 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:41:43,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:41:43,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:41:43,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:41:43,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:41:43,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:41:43,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:41:43,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:41:43,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:41:43,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:41:43,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:41:43,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:41:43,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:41:43,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:41:43,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:41:43,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:41:43,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:41:43,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:41:43,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:41:43,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 11:41:43,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:41:43,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:41:43,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:41:43,146 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 11:41:43,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:41:43,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:41:43,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:41:43,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:41:43,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:41:43,442 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:41:43,443 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-10-16 11:41:43,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/825f5ac2d/ea977b23706e478c83b25a5d9e1df8b3/FLAG5a4ce810a [2020-10-16 11:41:44,070 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:41:44,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-10-16 11:41:44,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/825f5ac2d/ea977b23706e478c83b25a5d9e1df8b3/FLAG5a4ce810a [2020-10-16 11:41:44,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/825f5ac2d/ea977b23706e478c83b25a5d9e1df8b3 [2020-10-16 11:41:44,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:41:44,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:41:44,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:41:44,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:41:44,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:41:44,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:41:44" (1/1) ... [2020-10-16 11:41:44,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af77137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:44, skipping insertion in model container [2020-10-16 11:41:44,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:41:44" (1/1) ... [2020-10-16 11:41:44,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:41:44,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:41:44,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:41:44,862 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:41:44,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:41:45,018 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:41:45,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45 WrapperNode [2020-10-16 11:41:45,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:41:45,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:41:45,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:41:45,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:41:45,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:41:45,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:41:45,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:41:45,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:41:45,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... [2020-10-16 11:41:45,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:41:45,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:41:45,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:41:45,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:41:45,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:41:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 11:41:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:41:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:41:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:41:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2020-10-16 11:41:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2020-10-16 11:41:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2020-10-16 11:41:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2020-10-16 11:41:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:41:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:41:45,199 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:41:45,701 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:41:45,701 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-16 11:41:45,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:41:45 BoogieIcfgContainer [2020-10-16 11:41:45,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:41:45,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:41:45,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:41:45,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:41:45,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:41:44" (1/3) ... [2020-10-16 11:41:45,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c34217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:41:45, skipping insertion in model container [2020-10-16 11:41:45,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:41:45" (2/3) ... [2020-10-16 11:41:45,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c34217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:41:45, skipping insertion in model container [2020-10-16 11:41:45,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:41:45" (3/3) ... [2020-10-16 11:41:45,714 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2020-10-16 11:41:45,725 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:41:45,726 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:41:45,734 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-16 11:41:45,735 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:41:45,769 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,770 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,770 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,770 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,770 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,771 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,771 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,771 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,772 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,772 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,772 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,772 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,776 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,776 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,777 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,777 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,780 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,780 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,780 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,780 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:41:45,788 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 11:41:45,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 11:41:45,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:41:45,818 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:41:45,818 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 11:41:45,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:41:45,819 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:41:45,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:41:45,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:41:45,819 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:41:45,833 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 11:41:45,834 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 118 transitions, 258 flow [2020-10-16 11:41:45,836 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 118 transitions, 258 flow [2020-10-16 11:41:45,837 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 111 places, 118 transitions, 258 flow [2020-10-16 11:41:45,892 INFO L129 PetriNetUnfolder]: 13/118 cut-off events. [2020-10-16 11:41:45,893 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 11:41:45,898 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 118 events. 13/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2020-10-16 11:41:45,901 INFO L117 LiptonReduction]: Number of co-enabled transitions 280 [2020-10-16 11:41:48,169 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-10-16 11:41:48,485 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-10-16 11:41:48,855 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-10-16 11:41:51,217 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-16 11:41:51,962 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-16 11:41:52,618 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-16 11:41:52,925 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-16 11:41:54,964 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-16 11:41:55,271 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-16 11:41:56,116 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-16 11:41:56,571 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-16 11:42:00,632 WARN L193 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-16 11:42:01,785 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 59 [2020-10-16 11:42:02,603 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-16 11:42:03,131 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-16 11:42:03,635 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-16 11:42:03,772 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-16 11:42:03,838 INFO L132 LiptonReduction]: Checked pairs total: 1192 [2020-10-16 11:42:03,839 INFO L134 LiptonReduction]: Total number of compositions: 130 [2020-10-16 11:42:03,845 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2020-10-16 11:42:03,858 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 72 states. [2020-10-16 11:42:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-16 11:42:03,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:42:03,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:42:03,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:42:03,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:42:03,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:42:03,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1948892377, now seen corresponding path program 1 times [2020-10-16 11:42:03,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:42:03,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786672408] [2020-10-16 11:42:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:42:04,002 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-16 11:42:04,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575263229] [2020-10-16 11:42:04,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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