/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:04:49,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:04:49,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:04:49,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:04:49,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:04:49,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:04:49,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:04:49,297 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.epf [2021-04-15 01:04:49,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:04:49,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:04:49,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:04:49,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:04:49,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:04:49,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:04:49,331 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:04:49,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:04:49,331 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:04:49,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:04:49,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:04:49,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:04:49,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:04:49,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:04:49,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:04:49,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:04:49,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:04:49,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:04:49,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:04:49,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:04:49,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:04:49,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:04:49,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:04:49,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:04:49,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:04:49,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:04:49,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:04:49,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:04:49,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:04:49,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:04:49,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:04:49,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:04:49,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:04:49,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:04:49,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:04:49,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:04:49,569 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:04:49,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2021-04-15 01:04:49,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654a9821f/94f096e70daf414dbb72d148dca77592/FLAG70e472096 [2021-04-15 01:04:49,984 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:04:49,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2021-04-15 01:04:49,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654a9821f/94f096e70daf414dbb72d148dca77592/FLAG70e472096 [2021-04-15 01:04:50,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654a9821f/94f096e70daf414dbb72d148dca77592 [2021-04-15 01:04:50,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:04:50,359 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:04:50,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:04:50,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:04:50,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:04:50,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df78344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50, skipping insertion in model container [2021-04-15 01:04:50,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:04:50,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:04:50,555 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i[950,963] [2021-04-15 01:04:50,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:04:50,727 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:04:50,735 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i[950,963] [2021-04-15 01:04:50,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:04:50,817 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:04:50,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50 WrapperNode [2021-04-15 01:04:50,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:04:50,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:04:50,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:04:50,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:04:50,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:04:50,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:04:50,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:04:50,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:04:50,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... [2021-04-15 01:04:50,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:04:50,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:04:50,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:04:50,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:04:50,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:04:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 01:04:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-15 01:04:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:04:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 01:04:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-15 01:04:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-15 01:04:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-15 01:04:50,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-15 01:04:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 01:04:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-15 01:04:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:04:50,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:04:50,968 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:04:51,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:04:51,216 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-15 01:04:51,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:04:51 BoogieIcfgContainer [2021-04-15 01:04:51,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:04:51,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:04:51,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:04:51,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:04:51,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:04:50" (1/3) ... [2021-04-15 01:04:51,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed4781b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:04:51, skipping insertion in model container [2021-04-15 01:04:51,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:04:50" (2/3) ... [2021-04-15 01:04:51,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed4781b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:04:51, skipping insertion in model container [2021-04-15 01:04:51,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:04:51" (3/3) ... [2021-04-15 01:04:51,222 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.oepc.i [2021-04-15 01:04:51,226 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:04:51,226 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:04:51,229 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:04:51,229 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:04:51,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,244 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,244 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,245 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,245 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,246 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,246 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,246 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,246 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,248 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,248 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,252 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,252 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:04:51,253 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-15 01:04:51,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-15 01:04:51,276 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:04:51,277 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:04:51,277 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:04:51,277 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:04:51,277 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:04:51,277 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:04:51,277 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:04:51,277 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:04:51,283 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 59 transitions, 128 flow [2021-04-15 01:04:51,334 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1172 states, 1170 states have (on average 2.7153846153846155) internal successors, (3177), 1171 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 1172 states, 1170 states have (on average 2.7153846153846155) internal successors, (3177), 1171 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-04-15 01:04:51,354 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:04:51,355 INFO L551 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] [2021-04-15 01:04:51,355 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:04:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:04:51,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1254159269, now seen corresponding path program 1 times [2021-04-15 01:04:51,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:04:51,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958875590] [2021-04-15 01:04:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:04:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:04:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:04:51,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958875590] [2021-04-15 01:04:51,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:04:51,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:04:51,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83485412] [2021-04-15 01:04:51,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:04:51,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:04:51,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:04:51,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:04:51,683 INFO L87 Difference]: Start difference. First operand has 1172 states, 1170 states have (on average 2.7153846153846155) internal successors, (3177), 1171 states have internal predecessors, (3177), 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 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:04:51,805 INFO L93 Difference]: Finished difference Result 1627 states and 4247 transitions. [2021-04-15 01:04:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:04:51,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 33 [2021-04-15 01:04:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:04:51,816 INFO L225 Difference]: With dead ends: 1627 [2021-04-15 01:04:51,816 INFO L226 Difference]: Without dead ends: 646 [2021-04-15 01:04:51,817 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:04:51,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-04-15 01:04:51,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2021-04-15 01:04:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 2.5441860465116277) internal successors, (1641), 645 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1641 transitions. [2021-04-15 01:04:51,860 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1641 transitions. Word has length 33 [2021-04-15 01:04:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:04:51,860 INFO L480 AbstractCegarLoop]: Abstraction has 646 states and 1641 transitions. [2021-04-15 01:04:51,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:51,860 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1641 transitions. [2021-04-15 01:04:51,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-04-15 01:04:51,861 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:04:51,861 INFO L551 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] [2021-04-15 01:04:51,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:04:51,862 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:04:51,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:04:51,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1666231930, now seen corresponding path program 1 times [2021-04-15 01:04:51,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:04:51,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172319285] [2021-04-15 01:04:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:04:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:04:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:04:52,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172319285] [2021-04-15 01:04:52,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:04:52,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:04:52,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373844192] [2021-04-15 01:04:52,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:04:52,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:04:52,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:04:52,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:04:52,010 INFO L87 Difference]: Start difference. First operand 646 states and 1641 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:04:52,158 INFO L93 Difference]: Finished difference Result 846 states and 2134 transitions. [2021-04-15 01:04:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:04:52,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 35 [2021-04-15 01:04:52,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:04:52,162 INFO L225 Difference]: With dead ends: 846 [2021-04-15 01:04:52,162 INFO L226 Difference]: Without dead ends: 474 [2021-04-15 01:04:52,163 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:04:52,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-04-15 01:04:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 426. [2021-04-15 01:04:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 2.3317647058823527) internal successors, (991), 425 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 991 transitions. [2021-04-15 01:04:52,179 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 991 transitions. Word has length 35 [2021-04-15 01:04:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:04:52,179 INFO L480 AbstractCegarLoop]: Abstraction has 426 states and 991 transitions. [2021-04-15 01:04:52,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 991 transitions. [2021-04-15 01:04:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-04-15 01:04:52,181 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:04:52,181 INFO L551 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] [2021-04-15 01:04:52,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:04:52,181 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:04:52,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:04:52,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1118114231, now seen corresponding path program 1 times [2021-04-15 01:04:52,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:04:52,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997218193] [2021-04-15 01:04:52,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:04:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:04:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:04:52,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997218193] [2021-04-15 01:04:52,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:04:52,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:04:52,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917285852] [2021-04-15 01:04:52,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:04:52,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:04:52,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:04:52,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:04:52,246 INFO L87 Difference]: Start difference. First operand 426 states and 991 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:52,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:04:52,324 INFO L93 Difference]: Finished difference Result 459 states and 1029 transitions. [2021-04-15 01:04:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:04:52,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 37 [2021-04-15 01:04:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:04:52,326 INFO L225 Difference]: With dead ends: 459 [2021-04-15 01:04:52,326 INFO L226 Difference]: Without dead ends: 325 [2021-04-15 01:04:52,326 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 65.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:04:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-04-15 01:04:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2021-04-15 01:04:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 2.191358024691358) internal successors, (710), 324 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 710 transitions. [2021-04-15 01:04:52,334 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 710 transitions. Word has length 37 [2021-04-15 01:04:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:04:52,334 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 710 transitions. [2021-04-15 01:04:52,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 710 transitions. [2021-04-15 01:04:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-04-15 01:04:52,336 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:04:52,336 INFO L551 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] [2021-04-15 01:04:52,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 01:04:52,336 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:04:52,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:04:52,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1671944056, now seen corresponding path program 1 times [2021-04-15 01:04:52,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:04:52,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716119009] [2021-04-15 01:04:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:04:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:04:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:04:52,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716119009] [2021-04-15 01:04:52,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:04:52,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:04:52,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944961209] [2021-04-15 01:04:52,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:04:52,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:04:52,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:04:52,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:04:52,449 INFO L87 Difference]: Start difference. First operand 325 states and 710 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:04:52,518 INFO L93 Difference]: Finished difference Result 181 states and 365 transitions. [2021-04-15 01:04:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 01:04:52,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-04-15 01:04:52,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:04:52,519 INFO L225 Difference]: With dead ends: 181 [2021-04-15 01:04:52,519 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:04:52,519 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:04:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:04:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:04:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:04:52,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-04-15 01:04:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:04:52,520 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:04:52,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:04:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:04:52,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:04:52,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 01:04:52,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:04:52 BasicIcfg [2021-04-15 01:04:52,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:04:52,524 INFO L168 Benchmark]: Toolchain (without parser) took 2164.41 ms. Allocated memory is still 358.6 MB. Free memory was 322.3 MB in the beginning and 326.2 MB in the end (delta: -3.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:04:52,524 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 358.6 MB. Free memory was 340.2 MB in the beginning and 340.1 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:04:52,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.02 ms. Allocated memory is still 358.6 MB. Free memory was 322.0 MB in the beginning and 321.2 MB in the end (delta: 813.2 kB). Peak memory consumption was 9.6 MB. Max. memory is 16.0 GB. [2021-04-15 01:04:52,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.55 ms. Allocated memory is still 358.6 MB. Free memory was 321.2 MB in the beginning and 320.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:04:52,525 INFO L168 Benchmark]: Boogie Preprocessor took 28.42 ms. Allocated memory is still 358.6 MB. Free memory was 320.2 MB in the beginning and 318.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:04:52,525 INFO L168 Benchmark]: RCFGBuilder took 328.50 ms. Allocated memory is still 358.6 MB. Free memory was 318.1 MB in the beginning and 297.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-04-15 01:04:52,525 INFO L168 Benchmark]: TraceAbstraction took 1304.80 ms. Allocated memory is still 358.6 MB. Free memory was 296.1 MB in the beginning and 326.2 MB in the end (delta: -30.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:04:52,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 358.6 MB. Free memory was 340.2 MB in the beginning and 340.1 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 458.02 ms. Allocated memory is still 358.6 MB. Free memory was 322.0 MB in the beginning and 321.2 MB in the end (delta: 813.2 kB). Peak memory consumption was 9.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.55 ms. Allocated memory is still 358.6 MB. Free memory was 321.2 MB in the beginning and 320.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.42 ms. Allocated memory is still 358.6 MB. Free memory was 320.2 MB in the beginning and 318.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 328.50 ms. Allocated memory is still 358.6 MB. Free memory was 318.1 MB in the beginning and 297.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1304.80 ms. Allocated memory is still 358.6 MB. Free memory was 296.1 MB in the beginning and 326.2 MB in the end (delta: -30.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1245.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 24.3ms, AutomataDifference: 452.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 56.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 279 SDtfs, 404 SDslu, 859 SDs, 0 SdLazy, 122 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 396.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1172occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 57.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.4ms SsaConstructionTime, 102.0ms SatisfiabilityAnalysisTime, 421.9ms InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...