/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/safe006_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 00:58:28,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 00:58:28,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 00:58:28,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 00:58:28,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 00:58:28,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 00:58:28,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 00:58:28,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-04-15 00:58:28,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 00:58:28,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 00:58:28,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 00:58:28,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 00:58:28,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 00:58:28,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 00:58:28,781 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 00:58:28,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 00:58:28,781 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 00:58:28,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 00:58:28,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 00:58:28,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 00:58:28,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 00:58:28,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 00:58:28,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 00:58:28,783 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 00:58:28,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 00:58:28,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 00:58:28,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 00:58:28,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 00:58:28,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 00:58:28,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 00:58:28,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 00:58:28,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 00:58:28,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 00:58:28,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 00:58:28,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 00:58:28,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 00:58:28,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 00:58:28,785 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 00:58:28,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 00:58:28,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 00:58:29,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 00:58:29,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 00:58:29,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 00:58:29,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 00:58:29,123 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 00:58:29,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-04-15 00:58:29,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebad4e056/f5e7fb5c204b4989ae9daaba90b9e63d/FLAGafecd8acd [2021-04-15 00:58:29,711 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 00:58:29,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-04-15 00:58:29,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebad4e056/f5e7fb5c204b4989ae9daaba90b9e63d/FLAGafecd8acd [2021-04-15 00:58:30,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebad4e056/f5e7fb5c204b4989ae9daaba90b9e63d [2021-04-15 00:58:30,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 00:58:30,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 00:58:30,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 00:58:30,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 00:58:30,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 00:58:30,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8f7709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30, skipping insertion in model container [2021-04-15 00:58:30,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 00:58:30,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 00:58:30,227 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i[950,963] [2021-04-15 00:58:30,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 00:58:30,337 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 00:58:30,347 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i[950,963] [2021-04-15 00:58:30,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 00:58:30,459 INFO L208 MainTranslator]: Completed translation [2021-04-15 00:58:30,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30 WrapperNode [2021-04-15 00:58:30,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 00:58:30,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 00:58:30,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 00:58:30,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 00:58:30,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 00:58:30,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 00:58:30,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 00:58:30,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 00:58:30,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... [2021-04-15 00:58:30,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 00:58:30,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 00:58:30,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 00:58:30,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 00:58:30,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 00:58:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 00:58:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-15 00:58:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 00:58:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 00:58:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-15 00:58:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-15 00:58:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-15 00:58:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-15 00:58:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 00:58:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-15 00:58:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 00:58:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 00:58:30,630 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 00:58:30,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 00:58:30,998 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-15 00:58:31,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:58:30 BoogieIcfgContainer [2021-04-15 00:58:31,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 00:58:31,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 00:58:31,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 00:58:31,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 00:58:31,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 12:58:30" (1/3) ... [2021-04-15 00:58:31,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc8876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:58:31, skipping insertion in model container [2021-04-15 00:58:31,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:58:30" (2/3) ... [2021-04-15 00:58:31,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc8876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:58:31, skipping insertion in model container [2021-04-15 00:58:31,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:58:30" (3/3) ... [2021-04-15 00:58:31,008 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc.i [2021-04-15 00:58:31,013 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 00:58:31,013 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 00:58:31,017 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 00:58:31,018 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 00:58:31,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,046 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,046 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,060 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,060 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:58:31,062 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-15 00:58:31,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-15 00:58:31,100 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 00:58:31,100 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 00:58:31,100 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 00:58:31,100 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 00:58:31,100 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 00:58:31,100 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 00:58:31,100 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 00:58:31,101 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 00:58:31,109 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 61 transitions, 132 flow [2021-04-15 00:58:31,168 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1174 states, 1172 states have (on average 2.712457337883959) internal successors, (3179), 1173 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 1174 states, 1172 states have (on average 2.712457337883959) internal successors, (3179), 1173 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-04-15 00:58:31,188 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:58:31,189 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 00:58:31,189 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:58:31,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:58:31,194 INFO L82 PathProgramCache]: Analyzing trace with hash -894398438, now seen corresponding path program 1 times [2021-04-15 00:58:31,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:58:31,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679405440] [2021-04-15 00:58:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:58:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:58:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:58:31,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679405440] [2021-04-15 00:58:31,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:58:31,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 00:58:31,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589962330] [2021-04-15 00:58:31,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 00:58:31,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:58:31,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 00:58:31,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 00:58:31,552 INFO L87 Difference]: Start difference. First operand has 1174 states, 1172 states have (on average 2.712457337883959) internal successors, (3179), 1173 states have internal predecessors, (3179), 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 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:58:31,702 INFO L93 Difference]: Finished difference Result 1517 states and 3949 transitions. [2021-04-15 00:58:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 00:58:31,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-04-15 00:58:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:58:31,718 INFO L225 Difference]: With dead ends: 1517 [2021-04-15 00:58:31,718 INFO L226 Difference]: Without dead ends: 600 [2021-04-15 00:58:31,719 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-04-15 00:58:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-04-15 00:58:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-04-15 00:58:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 2.5225375626043407) internal successors, (1511), 599 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1511 transitions. [2021-04-15 00:58:31,783 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1511 transitions. Word has length 35 [2021-04-15 00:58:31,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:58:31,783 INFO L480 AbstractCegarLoop]: Abstraction has 600 states and 1511 transitions. [2021-04-15 00:58:31,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:31,784 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1511 transitions. [2021-04-15 00:58:31,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-04-15 00:58:31,787 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:58:31,787 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 00:58:31,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 00:58:31,787 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:58:31,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:58:31,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1404670555, now seen corresponding path program 1 times [2021-04-15 00:58:31,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:58:31,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624630358] [2021-04-15 00:58:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:58:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:58:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:58:31,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624630358] [2021-04-15 00:58:31,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:58:31,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 00:58:31,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404316815] [2021-04-15 00:58:31,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 00:58:31,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:58:31,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 00:58:31,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 00:58:31,899 INFO L87 Difference]: Start difference. First operand 600 states and 1511 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:58:32,178 INFO L93 Difference]: Finished difference Result 955 states and 2380 transitions. [2021-04-15 00:58:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 00:58:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-04-15 00:58:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:58:32,183 INFO L225 Difference]: With dead ends: 955 [2021-04-15 00:58:32,183 INFO L226 Difference]: Without dead ends: 540 [2021-04-15 00:58:32,184 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 244.3ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-04-15 00:58:32,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-04-15 00:58:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2021-04-15 00:58:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 2.4786641929499074) internal successors, (1336), 539 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1336 transitions. [2021-04-15 00:58:32,220 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1336 transitions. Word has length 37 [2021-04-15 00:58:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:58:32,221 INFO L480 AbstractCegarLoop]: Abstraction has 540 states and 1336 transitions. [2021-04-15 00:58:32,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1336 transitions. [2021-04-15 00:58:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-04-15 00:58:32,223 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:58:32,223 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 00:58:32,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 00:58:32,223 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:58:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:58:32,224 INFO L82 PathProgramCache]: Analyzing trace with hash -7766020, now seen corresponding path program 1 times [2021-04-15 00:58:32,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:58:32,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115233161] [2021-04-15 00:58:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:58:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:58:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:58:32,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115233161] [2021-04-15 00:58:32,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:58:32,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 00:58:32,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576192310] [2021-04-15 00:58:32,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 00:58:32,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:58:32,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 00:58:32,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 00:58:32,331 INFO L87 Difference]: Start difference. First operand 540 states and 1336 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:32,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:58:32,478 INFO L93 Difference]: Finished difference Result 750 states and 1849 transitions. [2021-04-15 00:58:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 00:58:32,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-04-15 00:58:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:58:32,480 INFO L225 Difference]: With dead ends: 750 [2021-04-15 00:58:32,481 INFO L226 Difference]: Without dead ends: 405 [2021-04-15 00:58:32,481 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-04-15 00:58:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-04-15 00:58:32,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-04-15 00:58:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 2.373762376237624) internal successors, (959), 404 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 959 transitions. [2021-04-15 00:58:32,493 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 959 transitions. Word has length 39 [2021-04-15 00:58:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:58:32,494 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 959 transitions. [2021-04-15 00:58:32,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 959 transitions. [2021-04-15 00:58:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-04-15 00:58:32,496 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:58:32,496 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 00:58:32,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 00:58:32,497 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:58:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:58:32,499 INFO L82 PathProgramCache]: Analyzing trace with hash -969257764, now seen corresponding path program 1 times [2021-04-15 00:58:32,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:58:32,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852640927] [2021-04-15 00:58:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:58:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:58:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:58:32,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852640927] [2021-04-15 00:58:32,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:58:32,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 00:58:32,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672889277] [2021-04-15 00:58:32,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 00:58:32,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:58:32,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 00:58:32,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-15 00:58:32,657 INFO L87 Difference]: Start difference. First operand 405 states and 959 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:58:32,751 INFO L93 Difference]: Finished difference Result 365 states and 857 transitions. [2021-04-15 00:58:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 00:58:32,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 40 [2021-04-15 00:58:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:58:32,753 INFO L225 Difference]: With dead ends: 365 [2021-04-15 00:58:32,753 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 00:58:32,754 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 00:58:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 00:58:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 00:58:32,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 00:58:32,754 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-04-15 00:58:32,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:58:32,755 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 00:58:32,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 00:58:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 00:58:32,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 00:58:32,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 00:58:32,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 12:58:32 BasicIcfg [2021-04-15 00:58:32,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 00:58:32,763 INFO L168 Benchmark]: Toolchain (without parser) took 2738.04 ms. Allocated memory is still 356.5 MB. Free memory was 320.1 MB in the beginning and 280.6 MB in the end (delta: 39.4 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:32,763 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 356.5 MB. Free memory was 338.2 MB in the beginning and 338.1 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 00:58:32,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.91 ms. Allocated memory is still 356.5 MB. Free memory was 319.8 MB in the beginning and 313.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:32,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.28 ms. Allocated memory is still 356.5 MB. Free memory was 313.6 MB in the beginning and 311.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:32,765 INFO L168 Benchmark]: Boogie Preprocessor took 33.66 ms. Allocated memory is still 356.5 MB. Free memory was 311.5 MB in the beginning and 310.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 00:58:32,765 INFO L168 Benchmark]: RCFGBuilder took 448.15 ms. Allocated memory is still 356.5 MB. Free memory was 310.4 MB in the beginning and 289.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:32,767 INFO L168 Benchmark]: TraceAbstraction took 1757.21 ms. Allocated memory is still 356.5 MB. Free memory was 289.5 MB in the beginning and 280.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:32,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 356.5 MB. Free memory was 338.2 MB in the beginning and 338.1 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 426.91 ms. Allocated memory is still 356.5 MB. Free memory was 319.8 MB in the beginning and 313.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.28 ms. Allocated memory is still 356.5 MB. Free memory was 313.6 MB in the beginning and 311.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.66 ms. Allocated memory is still 356.5 MB. Free memory was 311.5 MB in the beginning and 310.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 448.15 ms. Allocated memory is still 356.5 MB. Free memory was 310.4 MB in the beginning and 289.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1757.21 ms. Allocated memory is still 356.5 MB. Free memory was 289.5 MB in the beginning and 280.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1658.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 26.2ms, AutomataDifference: 722.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 67.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 306 SDtfs, 489 SDslu, 1112 SDs, 0 SdLazy, 123 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 672.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1174occurred in iteration=0, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 101.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.4ms SsaConstructionTime, 81.1ms SatisfiabilityAnalysisTime, 515.1ms InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 641 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...