/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/safe036_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 17:27:25,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:27:25,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:27:25,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:27:25,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:27:25,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:27:25,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:27:25,681 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 [2021-05-21 17:27:25,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:27:25,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:27:25,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:27:25,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:27:25,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:27:25,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:27:25,710 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:27:25,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:27:25,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:27:25,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:27:25,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:27:25,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:27:25,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:27:25,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:27:25,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:27:25,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:27:25,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:27:25,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:27:25,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:27:25,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:27:25,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:27:25,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:27:25,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:27:25,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:27:25,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:27:25,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:27:25,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:27:25,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:27:25,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:27:25,713 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:27:25,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:27:25,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:27:25,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:27:25,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:27:25,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:27:25,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:27:25,975 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:27:25,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i [2021-05-21 17:27:26,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9b62d00c/7cf529f8405c4a8e9162119fd6b76c6a/FLAG1491c6687 [2021-05-21 17:27:26,447 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:27:26,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i [2021-05-21 17:27:26,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9b62d00c/7cf529f8405c4a8e9162119fd6b76c6a/FLAG1491c6687 [2021-05-21 17:27:26,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9b62d00c/7cf529f8405c4a8e9162119fd6b76c6a [2021-05-21 17:27:26,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:27:26,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:27:26,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:27:26,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:27:26,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:27:26,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13429119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26, skipping insertion in model container [2021-05-21 17:27:26,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:27:26,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:27:26,614 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] [2021-05-21 17:27:26,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:27:26,745 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:27:26,754 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] [2021-05-21 17:27:26,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:27:26,834 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:27:26,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26 WrapperNode [2021-05-21 17:27:26,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:27:26,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:27:26,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:27:26,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:27:26,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:27:26,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:27:26,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:27:26,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:27:26,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (1/1) ... [2021-05-21 17:27:26,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:27:26,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:27:26,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:27:26,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:27:26,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (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 [2021-05-21 17:27:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:27:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:27:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:27:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:27:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 17:27:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 17:27:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 17:27:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 17:27:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:27:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:27:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:27:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:27:26,955 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 17:27:27,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:27:27,266 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 17:27:27,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:27:27 BoogieIcfgContainer [2021-05-21 17:27:27,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:27:27,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:27:27,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:27:27,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:27:27,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:27:26" (1/3) ... [2021-05-21 17:27:27,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5986df45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:27:27, skipping insertion in model container [2021-05-21 17:27:27,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:26" (2/3) ... [2021-05-21 17:27:27,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5986df45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:27:27, skipping insertion in model container [2021-05-21 17:27:27,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:27:27" (3/3) ... [2021-05-21 17:27:27,273 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_rmo.oepc.i [2021-05-21 17:27:27,279 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:27:27,279 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:27:27,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 17:27:27,280 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:27:27,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,304 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,304 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,314 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,314 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,314 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,314 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:27,316 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 17:27:27,332 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 17:27:27,351 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:27:27,351 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:27:27,351 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:27:27,351 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:27:27,351 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:27:27,351 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:27:27,351 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:27:27,351 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:27:27,359 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 67 transitions, 144 flow [2021-05-21 17:27:27,418 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1246 states, 1244 states have (on average 2.695337620578778) internal successors, (3353), 1245 states have internal predecessors, (3353), 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) [2021-05-21 17:27:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 1246 states, 1244 states have (on average 2.695337620578778) internal successors, (3353), 1245 states have internal predecessors, (3353), 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) [2021-05-21 17:27:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-21 17:27:27,436 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:27,440 INFO L521 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] [2021-05-21 17:27:27,440 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:27,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:27,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1835842458, now seen corresponding path program 1 times [2021-05-21 17:27:27,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:27,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052872222] [2021-05-21 17:27:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:27,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:27,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052872222] [2021-05-21 17:27:27,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052872222] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:27,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:27,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:27:27,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832039308] [2021-05-21 17:27:27,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:27:27,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:27,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:27:27,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:27:27,732 INFO L87 Difference]: Start difference. First operand has 1246 states, 1244 states have (on average 2.695337620578778) internal successors, (3353), 1245 states have internal predecessors, (3353), 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) [2021-05-21 17:27:27,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:27,845 INFO L93 Difference]: Finished difference Result 1122 states and 2794 transitions. [2021-05-21 17:27:27,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:27:27,846 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 [2021-05-21 17:27:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:27,856 INFO L225 Difference]: With dead ends: 1122 [2021-05-21 17:27:27,857 INFO L226 Difference]: Without dead ends: 580 [2021-05-21 17:27:27,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:27:27,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-05-21 17:27:27,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-05-21 17:27:27,899 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) [2021-05-21 17:27:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1397 transitions. [2021-05-21 17:27:27,901 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1397 transitions. Word has length 41 [2021-05-21 17:27:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:27,902 INFO L482 AbstractCegarLoop]: Abstraction has 580 states and 1397 transitions. [2021-05-21 17:27:27,902 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) [2021-05-21 17:27:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1397 transitions. [2021-05-21 17:27:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-21 17:27:27,904 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:27,904 INFO L521 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] [2021-05-21 17:27:27,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:27:27,904 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:27,905 INFO L82 PathProgramCache]: Analyzing trace with hash 720801784, now seen corresponding path program 1 times [2021-05-21 17:27:27,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:27,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902650890] [2021-05-21 17:27:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:27,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:27,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902650890] [2021-05-21 17:27:27,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902650890] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:27,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:27,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:27:27,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905995420] [2021-05-21 17:27:27,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:27:27,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:27,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:27:27,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:27:27,992 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) [2021-05-21 17:27:28,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:28,080 INFO L93 Difference]: Finished difference Result 448 states and 1024 transitions. [2021-05-21 17:27:28,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:27:28,081 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 [2021-05-21 17:27:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:28,082 INFO L225 Difference]: With dead ends: 448 [2021-05-21 17:27:28,082 INFO L226 Difference]: Without dead ends: 316 [2021-05-21 17:27:28,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:27:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-05-21 17:27:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-05-21 17:27:28,089 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) [2021-05-21 17:27:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 693 transitions. [2021-05-21 17:27:28,090 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 693 transitions. Word has length 45 [2021-05-21 17:27:28,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:28,090 INFO L482 AbstractCegarLoop]: Abstraction has 316 states and 693 transitions. [2021-05-21 17:27:28,090 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) [2021-05-21 17:27:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 693 transitions. [2021-05-21 17:27:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 17:27:28,091 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:28,091 INFO L521 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] [2021-05-21 17:27:28,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:27:28,091 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:28,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:28,092 INFO L82 PathProgramCache]: Analyzing trace with hash -753432138, now seen corresponding path program 1 times [2021-05-21 17:27:28,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:28,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693790075] [2021-05-21 17:27:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:28,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:28,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693790075] [2021-05-21 17:27:28,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693790075] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:28,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:28,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:27:28,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020234207] [2021-05-21 17:27:28,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:27:28,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:28,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:27:28,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:27:28,189 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) [2021-05-21 17:27:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:28,248 INFO L93 Difference]: Finished difference Result 457 states and 1015 transitions. [2021-05-21 17:27:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 17:27:28,249 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 [2021-05-21 17:27:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:28,250 INFO L225 Difference]: With dead ends: 457 [2021-05-21 17:27:28,250 INFO L226 Difference]: Without dead ends: 271 [2021-05-21 17:27:28,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:27:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-05-21 17:27:28,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-05-21 17:27:28,255 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) [2021-05-21 17:27:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 573 transitions. [2021-05-21 17:27:28,256 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 573 transitions. Word has length 49 [2021-05-21 17:27:28,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:28,256 INFO L482 AbstractCegarLoop]: Abstraction has 271 states and 573 transitions. [2021-05-21 17:27:28,256 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) [2021-05-21 17:27:28,256 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 573 transitions. [2021-05-21 17:27:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 17:27:28,257 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:28,257 INFO L521 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] [2021-05-21 17:27:28,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:27:28,258 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:28,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:28,258 INFO L82 PathProgramCache]: Analyzing trace with hash -967070400, now seen corresponding path program 2 times [2021-05-21 17:27:28,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:28,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899003227] [2021-05-21 17:27:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:28,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:28,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899003227] [2021-05-21 17:27:28,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899003227] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:28,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:28,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:27:28,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126027256] [2021-05-21 17:27:28,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:27:28,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:28,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:27:28,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:27:28,341 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) [2021-05-21 17:27:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:28,432 INFO L93 Difference]: Finished difference Result 253 states and 531 transitions. [2021-05-21 17:27:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 17:27:28,432 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 [2021-05-21 17:27:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:28,433 INFO L225 Difference]: With dead ends: 253 [2021-05-21 17:27:28,433 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 17:27:28,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:27:28,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 17:27:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 17:27:28,433 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) [2021-05-21 17:27:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 17:27:28,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-05-21 17:27:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:28,434 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 17:27:28,434 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) [2021-05-21 17:27:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 17:27:28,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 17:27:28,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:27:28,435 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:27:28,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:27:28 BasicIcfg [2021-05-21 17:27:28,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:27:28,440 INFO L168 Benchmark]: Toolchain (without parser) took 1971.04 ms. Allocated memory is still 388.0 MB. Free memory was 350.9 MB in the beginning and 360.5 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:27:28,441 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 388.0 MB. Free memory is still 368.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:27:28,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.00 ms. Allocated memory is still 388.0 MB. Free memory was 350.6 MB in the beginning and 350.9 MB in the end (delta: -272.5 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:28,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 388.0 MB. Free memory was 350.9 MB in the beginning and 349.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:27:28,442 INFO L168 Benchmark]: Boogie Preprocessor took 26.87 ms. Allocated memory is still 388.0 MB. Free memory was 349.8 MB in the beginning and 347.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:28,444 INFO L168 Benchmark]: RCFGBuilder took 360.27 ms. Allocated memory is still 388.0 MB. Free memory was 347.7 MB in the beginning and 325.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:28,445 INFO L168 Benchmark]: TraceAbstraction took 1170.58 ms. Allocated memory is still 388.0 MB. Free memory was 325.7 MB in the beginning and 360.5 MB in the end (delta: -34.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:27:28,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 388.0 MB. Free memory is still 368.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 365.00 ms. Allocated memory is still 388.0 MB. Free memory was 350.6 MB in the beginning and 350.9 MB in the end (delta: -272.5 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 388.0 MB. Free memory was 350.9 MB in the beginning and 349.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.87 ms. Allocated memory is still 388.0 MB. Free memory was 349.8 MB in the beginning and 347.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 360.27 ms. Allocated memory is still 388.0 MB. Free memory was 347.7 MB in the beginning and 325.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1170.58 ms. Allocated memory is still 388.0 MB. Free memory was 325.7 MB in the beginning and 360.5 MB in the end (delta: -34.8 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1085.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 21.9ms, AutomataDifference: 383.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 66.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 293 SDtfs, 361 SDslu, 1022 SDs, 0 SdLazy, 118 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 337.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1246occurred 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: 48.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.5ms SsaConstructionTime, 101.3ms SatisfiabilityAnalysisTime, 335.3ms 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...