/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:52:24,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:52:24,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:52:25,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 16:52:25,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:52:25,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:52:25,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:52:25,077 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 [2021-07-09 16:52:25,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:52:25,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:52:25,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:52:25,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:52:25,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:52:25,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:52:25,132 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:52:25,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:52:25,133 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:52:25,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:52:25,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:52:25,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:52:25,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:52:25,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:52:25,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:52:25,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:52:25,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:52:25,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:52:25,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:52:25,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:52:25,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:52:25,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:52:25,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:52:25,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:52:25,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:52:25,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:52:25,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:52:25,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:52:25,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:52:25,136 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:52:25,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:52:25,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:52:25,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:52:25,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:52:25,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:52:25,447 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:52:25,447 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:52:25,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i [2021-07-09 16:52:25,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c97df24a/3244a4e88d1149e68c558b08d8f45a01/FLAGfa104c115 [2021-07-09 16:52:25,906 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:52:25,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i [2021-07-09 16:52:25,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c97df24a/3244a4e88d1149e68c558b08d8f45a01/FLAGfa104c115 [2021-07-09 16:52:25,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c97df24a/3244a4e88d1149e68c558b08d8f45a01 [2021-07-09 16:52:25,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:52:25,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:52:25,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:52:25,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:52:25,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:52:25,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:52:25" (1/1) ... [2021-07-09 16:52:25,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757d85e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:25, skipping insertion in model container [2021-07-09 16:52:25,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:52:25" (1/1) ... [2021-07-09 16:52:25,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:52:26,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:52:26,176 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i[950,963] [2021-07-09 16:52:26,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:52:26,365 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:52:26,376 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i[950,963] [2021-07-09 16:52:26,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:52:26,449 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:52:26,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26 WrapperNode [2021-07-09 16:52:26,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:52:26,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:52:26,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:52:26,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:52:26,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... [2021-07-09 16:52:26,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... [2021-07-09 16:52:26,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:52:26,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:52:26,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:52:26,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:52:26,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... [2021-07-09 16:52:26,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... [2021-07-09 16:52:26,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... [2021-07-09 16:52:26,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... [2021-07-09 16:52:26,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... [2021-07-09 16:52:26,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... [2021-07-09 16:52:26,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... [2021-07-09 16:52:26,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:52:26,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:52:26,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:52:26,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:52:26,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:52:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:52:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 16:52:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:52:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:52:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 16:52:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 16:52:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 16:52:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 16:52:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:52:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 16:52:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:52:26,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:52:26,627 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 16:52:26,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:52:26,904 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 16:52:26,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:52:26 BoogieIcfgContainer [2021-07-09 16:52:26,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:52:26,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:52:26,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:52:26,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:52:26,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:52:25" (1/3) ... [2021-07-09 16:52:26,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f414961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:52:26, skipping insertion in model container [2021-07-09 16:52:26,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:26" (2/3) ... [2021-07-09 16:52:26,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f414961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:52:26, skipping insertion in model container [2021-07-09 16:52:26,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:52:26" (3/3) ... [2021-07-09 16:52:26,913 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_rmo.oepc.i [2021-07-09 16:52:26,918 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:52:26,918 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:52:26,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 16:52:26,919 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:52:26,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,941 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,941 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,941 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,941 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,941 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,943 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,943 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,943 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,944 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,944 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,945 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,945 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,945 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,948 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,952 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,952 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,953 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:26,954 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:52:26,978 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 16:52:26,995 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:52:26,995 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:52:26,995 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:52:26,995 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:52:26,995 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:52:26,995 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:52:26,995 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:52:26,996 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 16:52:27,005 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 67 transitions, 144 flow [2021-07-09 16:52:27,052 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 805 states, 804 states have (on average 2.620646766169154) internal successors, (2107), 804 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 805 states, 804 states have (on average 2.620646766169154) internal successors, (2107), 804 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-07-09 16:52:27,076 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:27,077 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:52:27,077 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:27,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:27,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1835842458, now seen corresponding path program 1 times [2021-07-09 16:52:27,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:27,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635787729] [2021-07-09 16:52:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:27,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:27,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635787729] [2021-07-09 16:52:27,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635787729] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:27,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:27,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:52:27,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688038661] [2021-07-09 16:52:27,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:52:27,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:27,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:52:27,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:52:27,411 INFO L87 Difference]: Start difference. First operand has 805 states, 804 states have (on average 2.620646766169154) internal successors, (2107), 804 states have internal predecessors, (2107), 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 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:27,626 INFO L93 Difference]: Finished difference Result 858 states and 2114 transitions. [2021-07-09 16:52:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:52:27,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2021-07-09 16:52:27,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:27,651 INFO L225 Difference]: With dead ends: 858 [2021-07-09 16:52:27,651 INFO L226 Difference]: Without dead ends: 580 [2021-07-09 16:52:27,652 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 154.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:52:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-07-09 16:52:27,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-07-09 16:52:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 2.412780656303972) internal successors, (1397), 579 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1397 transitions. [2021-07-09 16:52:27,741 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1397 transitions. Word has length 41 [2021-07-09 16:52:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:27,741 INFO L482 AbstractCegarLoop]: Abstraction has 580 states and 1397 transitions. [2021-07-09 16:52:27,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1397 transitions. [2021-07-09 16:52:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-07-09 16:52:27,748 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:27,748 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:52:27,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:52:27,749 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:27,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1621279192, now seen corresponding path program 1 times [2021-07-09 16:52:27,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:27,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233354538] [2021-07-09 16:52:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:27,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:27,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233354538] [2021-07-09 16:52:27,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233354538] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:27,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:27,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:52:27,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104097581] [2021-07-09 16:52:27,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:52:27,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:27,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:52:27,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:52:27,918 INFO L87 Difference]: Start difference. First operand 580 states and 1397 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:28,104 INFO L93 Difference]: Finished difference Result 448 states and 1024 transitions. [2021-07-09 16:52:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:52:28,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-07-09 16:52:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:28,107 INFO L225 Difference]: With dead ends: 448 [2021-07-09 16:52:28,107 INFO L226 Difference]: Without dead ends: 316 [2021-07-09 16:52:28,109 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 16:52:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-07-09 16:52:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-07-09 16:52:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 2.2) internal successors, (693), 315 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 693 transitions. [2021-07-09 16:52:28,130 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 693 transitions. Word has length 45 [2021-07-09 16:52:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:28,130 INFO L482 AbstractCegarLoop]: Abstraction has 316 states and 693 transitions. [2021-07-09 16:52:28,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:28,131 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 693 transitions. [2021-07-09 16:52:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-09 16:52:28,133 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:28,133 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:52:28,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:52:28,133 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:28,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:28,134 INFO L82 PathProgramCache]: Analyzing trace with hash 295160726, now seen corresponding path program 1 times [2021-07-09 16:52:28,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:28,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418125478] [2021-07-09 16:52:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:28,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:28,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418125478] [2021-07-09 16:52:28,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418125478] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:28,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:28,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:52:28,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110022193] [2021-07-09 16:52:28,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:52:28,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:28,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:52:28,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:52:28,286 INFO L87 Difference]: Start difference. First operand 316 states and 693 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:28,405 INFO L93 Difference]: Finished difference Result 457 states and 1015 transitions. [2021-07-09 16:52:28,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:52:28,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2021-07-09 16:52:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:28,410 INFO L225 Difference]: With dead ends: 457 [2021-07-09 16:52:28,410 INFO L226 Difference]: Without dead ends: 271 [2021-07-09 16:52:28,411 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:52:28,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-07-09 16:52:28,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-07-09 16:52:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 2.1222222222222222) internal successors, (573), 270 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 573 transitions. [2021-07-09 16:52:28,418 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 573 transitions. Word has length 49 [2021-07-09 16:52:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:28,419 INFO L482 AbstractCegarLoop]: Abstraction has 271 states and 573 transitions. [2021-07-09 16:52:28,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 573 transitions. [2021-07-09 16:52:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-09 16:52:28,420 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:28,420 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 16:52:28,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:52:28,420 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:28,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash -967070400, now seen corresponding path program 2 times [2021-07-09 16:52:28,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:28,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264721080] [2021-07-09 16:52:28,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:28,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:28,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264721080] [2021-07-09 16:52:28,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264721080] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:28,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:28,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:52:28,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496102581] [2021-07-09 16:52:28,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:52:28,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:28,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:52:28,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:52:28,583 INFO L87 Difference]: Start difference. First operand 271 states and 573 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:28,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:28,688 INFO L93 Difference]: Finished difference Result 253 states and 531 transitions. [2021-07-09 16:52:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:52:28,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2021-07-09 16:52:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:28,689 INFO L225 Difference]: With dead ends: 253 [2021-07-09 16:52:28,689 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 16:52:28,689 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:52:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 16:52:28,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 16:52:28,690 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) [2021-07-09 16:52:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 16:52:28,690 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-07-09 16:52:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:28,690 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 16:52:28,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:52:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 16:52:28,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 16:52:28,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:52:28,693 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:52:28,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:52:28 BasicIcfg [2021-07-09 16:52:28,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:52:28,696 INFO L168 Benchmark]: Toolchain (without parser) took 2749.83 ms. Allocated memory was 180.4 MB in the beginning and 231.7 MB in the end (delta: 51.4 MB). Free memory was 143.3 MB in the beginning and 206.2 MB in the end (delta: -63.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:52:28,696 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 180.4 MB. Free memory is still 161.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:52:28,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.08 ms. Allocated memory is still 180.4 MB. Free memory was 143.1 MB in the beginning and 153.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:28,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 180.4 MB. Free memory was 153.5 MB in the beginning and 150.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:28,699 INFO L168 Benchmark]: Boogie Preprocessor took 33.84 ms. Allocated memory is still 180.4 MB. Free memory was 150.8 MB in the beginning and 149.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:28,706 INFO L168 Benchmark]: RCFGBuilder took 362.28 ms. Allocated memory is still 180.4 MB. Free memory was 149.8 MB in the beginning and 128.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:28,706 INFO L168 Benchmark]: TraceAbstraction took 1787.32 ms. Allocated memory was 180.4 MB in the beginning and 231.7 MB in the end (delta: 51.4 MB). Free memory was 128.3 MB in the beginning and 206.2 MB in the end (delta: -77.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:52:28,712 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 180.4 MB. Free memory is still 161.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 502.08 ms. Allocated memory is still 180.4 MB. Free memory was 143.1 MB in the beginning and 153.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 180.4 MB. Free memory was 153.5 MB in the beginning and 150.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.84 ms. Allocated memory is still 180.4 MB. Free memory was 150.8 MB in the beginning and 149.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 362.28 ms. Allocated memory is still 180.4 MB. Free memory was 149.8 MB in the beginning and 128.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1787.32 ms. Allocated memory was 180.4 MB in the beginning and 231.7 MB in the end (delta: 51.4 MB). Free memory was 128.3 MB in the beginning and 206.2 MB in the end (delta: -77.9 MB). There was no memory consumed. Max. memory is 8.0 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1698.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 32.4ms, AutomataDifference: 684.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 56.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 285 SDtfs, 360 SDslu, 990 SDs, 0 SdLazy, 118 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 127.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 560.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=805occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 105.7ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.3ms SsaConstructionTime, 150.5ms SatisfiabilityAnalysisTime, 497.0ms InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 496 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...