/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:54:31,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:54:31,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:54:31,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:54:31,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:54:31,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:54:31,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:54:31,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:54:31,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:54:31,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:54:31,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:54:31,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:54:31,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:54:31,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:54:31,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:54:31,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:54:31,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:54:31,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:54:31,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:54:31,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:54:31,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:54:31,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:54:31,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:54:31,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:54:31,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 22:54:31,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 22:54:31,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 22:54:31,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 22:54:31,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 22:54:31,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 22:54:31,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:54:31,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:54:31,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:54:31,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:54:31,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:54:31,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:54:31,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:54:31,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:54:31,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:54:31,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:54:31,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:54:31,935 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-VariableLbe.epf [2019-12-18 22:54:31,949 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:54:31,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:54:31,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:54:31,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:54:31,950 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:54:31,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:54:31,951 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:54:31,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:54:31,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:54:31,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:54:31,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:54:31,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:54:31,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:54:31,952 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:54:31,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:54:31,952 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:54:31,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:54:31,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:54:31,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:54:31,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:54:31,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:54:31,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:54:31,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:54:31,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:54:31,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:54:31,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:54:31,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:54:31,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:54:31,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:54:31,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:54:32,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:54:32,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:54:32,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:54:32,245 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:54:32,245 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:54:32,246 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2019-12-18 22:54:32,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6811ed0c0/5e862632dc1145a0b207112790e54c3a/FLAG51c70b0cc [2019-12-18 22:54:32,930 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:54:32,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2019-12-18 22:54:32,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6811ed0c0/5e862632dc1145a0b207112790e54c3a/FLAG51c70b0cc [2019-12-18 22:54:33,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6811ed0c0/5e862632dc1145a0b207112790e54c3a [2019-12-18 22:54:33,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:54:33,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:54:33,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:54:33,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:54:33,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:54:33,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:33,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6d8139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33, skipping insertion in model container [2019-12-18 22:54:33,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:33,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:54:33,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:54:33,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:54:33,825 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:54:33,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:54:33,964 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:54:33,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33 WrapperNode [2019-12-18 22:54:33,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:54:33,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:54:33,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:54:33,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:54:33,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:33,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:34,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:54:34,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:54:34,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:54:34,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:54:34,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:34,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:34,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:34,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:34,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:34,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:34,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (1/1) ... [2019-12-18 22:54:34,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:54:34,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:54:34,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:54:34,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:54:34,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (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 [2019-12-18 22:54:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:54:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:54:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:54:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:54:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:54:34,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:54:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:54:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:54:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:54:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:54:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:54:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:54:34,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:54:34,106 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 22:54:34,448 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:54:34,448 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:54:34,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:54:34 BoogieIcfgContainer [2019-12-18 22:54:34,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:54:34,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:54:34,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:54:34,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:54:34,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:54:33" (1/3) ... [2019-12-18 22:54:34,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1257073e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:54:34, skipping insertion in model container [2019-12-18 22:54:34,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:33" (2/3) ... [2019-12-18 22:54:34,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1257073e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:54:34, skipping insertion in model container [2019-12-18 22:54:34,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:54:34" (3/3) ... [2019-12-18 22:54:34,459 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2019-12-18 22:54:34,469 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:54:34,470 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:54:34,477 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:54:34,478 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:54:34,508 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,509 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,509 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,510 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,510 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,510 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,511 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,511 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,512 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,512 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,512 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,512 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,513 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,513 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,513 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,514 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,514 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,514 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,518 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,518 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,519 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,519 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,522 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,523 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,523 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,523 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,526 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,526 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,526 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,527 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:34,553 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:54:34,577 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:54:34,577 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:54:34,578 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:54:34,578 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:54:34,578 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:54:34,579 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:54:34,579 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:54:34,579 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:54:34,598 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-18 22:54:34,601 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:54:34,640 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:54:34,641 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:54:34,654 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:54:34,657 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:54:34,683 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:54:34,683 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:54:34,686 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:54:34,689 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:54:34,690 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:54:35,893 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-18 22:54:36,145 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-12-18 22:54:36,192 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-18 22:54:36,192 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-18 22:54:36,197 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 22:54:36,210 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 22:54:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 22:54:36,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:54:36,228 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:36,229 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:36,230 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:36,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:36,237 INFO L82 PathProgramCache]: Analyzing trace with hash -53140901, now seen corresponding path program 1 times [2019-12-18 22:54:36,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:36,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218219521] [2019-12-18 22:54:36,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:54:36,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218219521] [2019-12-18 22:54:36,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:36,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:54:36,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820784779] [2019-12-18 22:54:36,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:54:36,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:36,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:54:36,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:54:36,545 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 22:54:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:36,590 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-18 22:54:36,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:54:36,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:54:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:36,604 INFO L225 Difference]: With dead ends: 42 [2019-12-18 22:54:36,605 INFO L226 Difference]: Without dead ends: 34 [2019-12-18 22:54:36,606 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:54:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-18 22:54:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-18 22:54:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 22:54:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-18 22:54:36,640 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-18 22:54:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:36,642 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-18 22:54:36,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:54:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-18 22:54:36,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:54:36,643 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:36,643 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:36,643 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:36,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1649012318, now seen corresponding path program 1 times [2019-12-18 22:54:36,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:36,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971369628] [2019-12-18 22:54:36,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:54:36,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971369628] [2019-12-18 22:54:36,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:36,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:54:36,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125068376] [2019-12-18 22:54:36,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:54:36,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:36,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:54:36,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:54:36,773 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 3 states. [2019-12-18 22:54:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:36,779 INFO L93 Difference]: Finished difference Result 32 states and 59 transitions. [2019-12-18 22:54:36,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:54:36,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 22:54:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:36,780 INFO L225 Difference]: With dead ends: 32 [2019-12-18 22:54:36,780 INFO L226 Difference]: Without dead ends: 32 [2019-12-18 22:54:36,781 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:54:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-18 22:54:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-18 22:54:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-18 22:54:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 59 transitions. [2019-12-18 22:54:36,787 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 59 transitions. Word has length 9 [2019-12-18 22:54:36,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:36,788 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 59 transitions. [2019-12-18 22:54:36,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:54:36,788 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 59 transitions. [2019-12-18 22:54:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:54:36,789 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:36,789 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:36,789 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:36,789 INFO L82 PathProgramCache]: Analyzing trace with hash 420225671, now seen corresponding path program 1 times [2019-12-18 22:54:36,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:36,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008028756] [2019-12-18 22:54:36,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:36,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:54:36,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008028756] [2019-12-18 22:54:36,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:36,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 22:54:36,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039194453] [2019-12-18 22:54:36,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 22:54:36,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:36,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 22:54:36,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-18 22:54:36,939 INFO L87 Difference]: Start difference. First operand 32 states and 59 transitions. Second operand 6 states. [2019-12-18 22:54:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:37,018 INFO L93 Difference]: Finished difference Result 32 states and 57 transitions. [2019-12-18 22:54:37,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 22:54:37,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-18 22:54:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:37,020 INFO L225 Difference]: With dead ends: 32 [2019-12-18 22:54:37,020 INFO L226 Difference]: Without dead ends: 24 [2019-12-18 22:54:37,020 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-18 22:54:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-18 22:54:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-18 22:54:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-18 22:54:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2019-12-18 22:54:37,024 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 10 [2019-12-18 22:54:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:37,025 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2019-12-18 22:54:37,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 22:54:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2019-12-18 22:54:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:54:37,025 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:37,026 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:37,026 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:37,026 INFO L82 PathProgramCache]: Analyzing trace with hash 868107411, now seen corresponding path program 1 times [2019-12-18 22:54:37,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:37,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484019782] [2019-12-18 22:54:37,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:54:37,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484019782] [2019-12-18 22:54:37,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:37,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:54:37,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182651363] [2019-12-18 22:54:37,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:54:37,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:37,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:54:37,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:54:37,121 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 4 states. [2019-12-18 22:54:37,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:37,144 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2019-12-18 22:54:37,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:54:37,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:54:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:37,146 INFO L225 Difference]: With dead ends: 27 [2019-12-18 22:54:37,146 INFO L226 Difference]: Without dead ends: 16 [2019-12-18 22:54:37,147 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:54:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-18 22:54:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-18 22:54:37,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-18 22:54:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-18 22:54:37,149 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-12-18 22:54:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:37,150 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-18 22:54:37,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:54:37,151 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-18 22:54:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:54:37,152 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:37,152 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:37,152 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash 144947967, now seen corresponding path program 2 times [2019-12-18 22:54:37,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:37,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627635533] [2019-12-18 22:54:37,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:54:37,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627635533] [2019-12-18 22:54:37,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:37,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:54:37,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775814171] [2019-12-18 22:54:37,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:54:37,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:37,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:54:37,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:54:37,212 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-18 22:54:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:37,242 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-12-18 22:54:37,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:54:37,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:54:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:37,244 INFO L225 Difference]: With dead ends: 18 [2019-12-18 22:54:37,244 INFO L226 Difference]: Without dead ends: 12 [2019-12-18 22:54:37,245 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:54:37,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-18 22:54:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-18 22:54:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-18 22:54:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-18 22:54:37,250 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-18 22:54:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:37,250 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-18 22:54:37,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:54:37,253 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-18 22:54:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:54:37,253 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:37,254 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:37,254 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:37,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1810889517, now seen corresponding path program 3 times [2019-12-18 22:54:37,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:37,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496567943] [2019-12-18 22:54:37,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:54:37,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496567943] [2019-12-18 22:54:37,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:37,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:54:37,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952191151] [2019-12-18 22:54:37,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:54:37,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:37,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:54:37,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:54:37,313 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 4 states. [2019-12-18 22:54:37,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:37,334 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-18 22:54:37,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:54:37,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:54:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:37,336 INFO L225 Difference]: With dead ends: 11 [2019-12-18 22:54:37,336 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:54:37,336 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:54:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:54:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:54:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:54:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:54:37,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:54:37,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:37,338 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:54:37,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:54:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:54:37,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:54:37,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:54:37 BasicIcfg [2019-12-18 22:54:37,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:54:37,354 INFO L168 Benchmark]: Toolchain (without parser) took 4135.25 ms. Allocated memory was 145.2 MB in the beginning and 246.9 MB in the end (delta: 101.7 MB). Free memory was 101.8 MB in the beginning and 133.2 MB in the end (delta: -31.4 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:37,355 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 22:54:37,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.52 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 157.7 MB in the end (delta: -56.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:37,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.40 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 155.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:37,363 INFO L168 Benchmark]: Boogie Preprocessor took 28.14 ms. Allocated memory is still 202.9 MB. Free memory was 155.8 MB in the beginning and 153.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:37,364 INFO L168 Benchmark]: RCFGBuilder took 411.29 ms. Allocated memory is still 202.9 MB. Free memory was 153.8 MB in the beginning and 132.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:37,365 INFO L168 Benchmark]: TraceAbstraction took 2898.62 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 132.8 MB in the beginning and 133.2 MB in the end (delta: -441.5 kB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:37,375 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 747.52 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 157.7 MB in the end (delta: -56.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.40 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 155.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.14 ms. Allocated memory is still 202.9 MB. Free memory was 155.8 MB in the beginning and 153.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 411.29 ms. Allocated memory is still 202.9 MB. Free memory was 153.8 MB in the beginning and 132.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2898.62 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 132.8 MB in the beginning and 133.2 MB in the end (delta: -441.5 kB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 230 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 38 SDslu, 49 SDs, 0 SdLazy, 48 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1459 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...