/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:34:53,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:34:53,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:34:53,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:34:54,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:34:54,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:34:54,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:34:54,004 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-Separate.epf [2021-05-21 23:34:54,036 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:34:54,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:34:54,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:34:54,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:34:54,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:34:54,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:34:54,040 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:34:54,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:34:54,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:34:54,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:34:54,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:34:54,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:34:54,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:34:54,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:34:54,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:34:54,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:34:54,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:34:54,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:34:54,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:34:54,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:34:54,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:34:54,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:34:54,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:34:54,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:34:54,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:34:54,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:34:54,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:34:54,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:34:54,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:34:54,044 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:34:54,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:34:54,045 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:34:54,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:34:54,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:34:54,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:34:54,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:34:54,409 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:34:54,409 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:34:54,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_tso.opt.i [2021-05-21 23:34:54,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95e54b25/6cae96bafbd6439a8e4f1c2427edd311/FLAGe3428b561 [2021-05-21 23:34:54,929 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:34:54,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_tso.opt.i [2021-05-21 23:34:54,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95e54b25/6cae96bafbd6439a8e4f1c2427edd311/FLAGe3428b561 [2021-05-21 23:34:55,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95e54b25/6cae96bafbd6439a8e4f1c2427edd311 [2021-05-21 23:34:55,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:34:55,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:34:55,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:34:55,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:34:55,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:34:55,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:55,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b311709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55, skipping insertion in model container [2021-05-21 23:34:55,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:55,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:34:55,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:34:55,680 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/safe006_tso.opt.i[949,962] [2021-05-21 23:34:55,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:34:55,860 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:34:55,871 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/safe006_tso.opt.i[949,962] [2021-05-21 23:34:55,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:34:55,963 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:34:55,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55 WrapperNode [2021-05-21 23:34:55,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:34:55,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:34:55,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:34:55,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:34:55,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:55,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:55,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:34:55,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:34:55,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:34:55,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:34:56,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:56,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:56,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:56,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:56,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:56,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:56,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (1/1) ... [2021-05-21 23:34:56,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:34:56,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:34:56,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:34:56,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:34:56,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (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 23:34:56,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:34:56,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:34:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:34:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:34:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:34:56,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:34:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:34:56,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:34:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:34:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:34:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:34:56,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:34:56,090 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 23:34:56,485 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:34:56,486 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:34:56,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:34:56 BoogieIcfgContainer [2021-05-21 23:34:56,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:34:56,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:34:56,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:34:56,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:34:56,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:34:55" (1/3) ... [2021-05-21 23:34:56,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c2f242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:34:56, skipping insertion in model container [2021-05-21 23:34:56,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:55" (2/3) ... [2021-05-21 23:34:56,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c2f242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:34:56, skipping insertion in model container [2021-05-21 23:34:56,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:34:56" (3/3) ... [2021-05-21 23:34:56,495 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_tso.opt.i [2021-05-21 23:34:56,500 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:34:56,500 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:34:56,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:34:56,501 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:34:56,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,542 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,542 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,546 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,547 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,547 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,547 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:56,553 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:34:56,572 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:34:56,597 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:34:56,597 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:34:56,597 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:34:56,597 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:34:56,598 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:34:56,598 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:34:56,598 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:34:56,598 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:34:56,609 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 67 transitions, 144 flow [2021-05-21 23:34:56,675 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 23:34:56,680 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 23:34:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-21 23:34:56,705 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:56,706 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 23:34:56,706 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:56,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:56,711 INFO L82 PathProgramCache]: Analyzing trace with hash -593502858, now seen corresponding path program 1 times [2021-05-21 23:34:56,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:56,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310749716] [2021-05-21 23:34:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:57,109 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 23:34:57,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:57,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310749716] [2021-05-21 23:34:57,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310749716] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:57,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:57,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:34:57,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561646239] [2021-05-21 23:34:57,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:34:57,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:57,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:34:57,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:34:57,134 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 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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 23:34:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:57,320 INFO L93 Difference]: Finished difference Result 1589 states and 4123 transitions. [2021-05-21 23:34:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:34:57,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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 23:34:57,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:57,335 INFO L225 Difference]: With dead ends: 1589 [2021-05-21 23:34:57,335 INFO L226 Difference]: Without dead ends: 672 [2021-05-21 23:34:57,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-05-21 23:34:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-05-21 23:34:57,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2021-05-21 23:34:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 2.511177347242921) internal successors, (1685), 671 states have internal predecessors, (1685), 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 23:34:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1685 transitions. [2021-05-21 23:34:57,406 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1685 transitions. Word has length 41 [2021-05-21 23:34:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:57,406 INFO L482 AbstractCegarLoop]: Abstraction has 672 states and 1685 transitions. [2021-05-21 23:34:57,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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 23:34:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1685 transitions. [2021-05-21 23:34:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-21 23:34:57,409 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:57,409 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] [2021-05-21 23:34:57,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:34:57,409 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:57,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:57,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1356739669, now seen corresponding path program 1 times [2021-05-21 23:34:57,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:57,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910927845] [2021-05-21 23:34:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:57,562 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 23:34:57,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:57,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910927845] [2021-05-21 23:34:57,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910927845] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:57,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:57,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:34:57,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719210161] [2021-05-21 23:34:57,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:34:57,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:57,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:34:57,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:34:57,577 INFO L87 Difference]: Start difference. First operand 672 states and 1685 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 23:34:57,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:57,831 INFO L93 Difference]: Finished difference Result 1052 states and 2619 transitions. [2021-05-21 23:34:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 23:34:57,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2021-05-21 23:34:57,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:57,835 INFO L225 Difference]: With dead ends: 1052 [2021-05-21 23:34:57,835 INFO L226 Difference]: Without dead ends: 612 [2021-05-21 23:34:57,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 229.7ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-05-21 23:34:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-05-21 23:34:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2021-05-21 23:34:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 2.469721767594108) internal successors, (1509), 611 states have internal predecessors, (1509), 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 23:34:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1509 transitions. [2021-05-21 23:34:57,856 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1509 transitions. Word has length 43 [2021-05-21 23:34:57,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:57,857 INFO L482 AbstractCegarLoop]: Abstraction has 612 states and 1509 transitions. [2021-05-21 23:34:57,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 23:34:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1509 transitions. [2021-05-21 23:34:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-21 23:34:57,859 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:57,859 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 23:34:57,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:34:57,859 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:57,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1448724886, now seen corresponding path program 1 times [2021-05-21 23:34:57,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:57,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350794724] [2021-05-21 23:34:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:58,038 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 23:34:58,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:58,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350794724] [2021-05-21 23:34:58,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350794724] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:58,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:58,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:34:58,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046574617] [2021-05-21 23:34:58,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:34:58,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:58,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:34:58,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:34:58,040 INFO L87 Difference]: Start difference. First operand 612 states and 1509 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 23:34:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:58,195 INFO L93 Difference]: Finished difference Result 842 states and 2073 transitions. [2021-05-21 23:34:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:34:58,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 23:34:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:58,199 INFO L225 Difference]: With dead ends: 842 [2021-05-21 23:34:58,199 INFO L226 Difference]: Without dead ends: 427 [2021-05-21 23:34:58,200 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 171.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:34:58,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-05-21 23:34:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-05-21 23:34:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 2.3896713615023475) internal successors, (1018), 426 states have internal predecessors, (1018), 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 23:34:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1018 transitions. [2021-05-21 23:34:58,211 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1018 transitions. Word has length 45 [2021-05-21 23:34:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:58,212 INFO L482 AbstractCegarLoop]: Abstraction has 427 states and 1018 transitions. [2021-05-21 23:34:58,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 23:34:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1018 transitions. [2021-05-21 23:34:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-21 23:34:58,215 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:58,215 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] [2021-05-21 23:34:58,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:34:58,215 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:58,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:58,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1556709704, now seen corresponding path program 1 times [2021-05-21 23:34:58,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:58,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222239097] [2021-05-21 23:34:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:58,334 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 23:34:58,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:58,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222239097] [2021-05-21 23:34:58,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222239097] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:58,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:58,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:34:58,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251397379] [2021-05-21 23:34:58,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:34:58,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:58,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:34:58,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:34:58,340 INFO L87 Difference]: Start difference. First operand 427 states and 1018 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 23:34:58,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:58,451 INFO L93 Difference]: Finished difference Result 387 states and 916 transitions. [2021-05-21 23:34:58,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:34:58,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2021-05-21 23:34:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:58,454 INFO L225 Difference]: With dead ends: 387 [2021-05-21 23:34:58,454 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:34:58,454 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 23:34:58,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:34:58,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:34:58,455 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 23:34:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:34:58,455 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2021-05-21 23:34:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:58,455 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:34:58,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 23:34:58,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:34:58,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:34:58,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:34:58,456 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:34:58,458 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-21 23:34:58,460 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:34:58,460 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:34:58,460 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:34:58,460 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:34:58,460 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:34:58,461 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:34:58,461 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:34:58,461 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:34:58,465 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 67 transitions, 144 flow [2021-05-21 23:34:58,508 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 23:34:58,510 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 23:34:58,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:34:58,514 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:34:58,514 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:34:58,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:34:58 BasicIcfg [2021-05-21 23:34:58,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:34:58,519 INFO L168 Benchmark]: Toolchain (without parser) took 3076.30 ms. Allocated memory is still 356.5 MB. Free memory was 318.8 MB in the beginning and 250.0 MB in the end (delta: 68.8 MB). Peak memory consumption was 70.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:58,522 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 356.5 MB. Free memory is still 337.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:34:58,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.01 ms. Allocated memory is still 356.5 MB. Free memory was 318.6 MB in the beginning and 318.1 MB in the end (delta: 519.2 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:58,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.60 ms. Allocated memory is still 356.5 MB. Free memory was 318.1 MB in the beginning and 316.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:58,526 INFO L168 Benchmark]: Boogie Preprocessor took 19.29 ms. Allocated memory is still 356.5 MB. Free memory was 316.0 MB in the beginning and 314.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:58,526 INFO L168 Benchmark]: RCFGBuilder took 471.94 ms. Allocated memory is still 356.5 MB. Free memory was 314.9 MB in the beginning and 291.9 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:58,531 INFO L168 Benchmark]: TraceAbstraction took 2027.68 ms. Allocated memory is still 356.5 MB. Free memory was 290.9 MB in the beginning and 250.0 MB in the end (delta: 40.9 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:58,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 356.5 MB. Free memory is still 337.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 517.01 ms. Allocated memory is still 356.5 MB. Free memory was 318.6 MB in the beginning and 318.1 MB in the end (delta: 519.2 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.60 ms. Allocated memory is still 356.5 MB. Free memory was 318.1 MB in the beginning and 316.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.29 ms. Allocated memory is still 356.5 MB. Free memory was 316.0 MB in the beginning and 314.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 471.94 ms. Allocated memory is still 356.5 MB. Free memory was 314.9 MB in the beginning and 291.9 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2027.68 ms. Allocated memory is still 356.5 MB. Free memory was 290.9 MB in the beginning and 250.0 MB in the end (delta: 40.9 MB). Peak memory consumption was 44.0 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 - 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: 1861.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 35.6ms, AutomataDifference: 752.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 77.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 318 SDtfs, 534 SDslu, 1179 SDs, 0 SdLazy, 120 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 119.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 659.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1246occurred 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: 91.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.9ms SsaConstructionTime, 138.6ms SatisfiabilityAnalysisTime, 598.7ms InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 761 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 54.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 5.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 47.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1246occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: 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...