/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:09:01,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:09:01,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:09:01,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:09:01,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:09:01,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:09:01,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:09:01,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:09:01,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:09:01,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:09:01,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:09:01,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:09:01,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:09:01,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:09:01,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:09:01,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:09:01,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:09:01,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:09:01,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:09:01,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:09:01,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:09:01,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:09:01,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:09:01,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:09:01,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:09:01,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:09:01,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:09:01,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:09:01,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:09:01,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:09:01,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:09:01,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:09:01,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:09:01,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:09:01,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:09:01,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:09:01,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:09:01,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:09:01,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:09:01,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:09:01,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:09:01,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:09:01,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:09:01,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:09:01,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:09:01,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:09:01,950 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:09:01,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:09:01,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:09:01,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:09:01,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:09:01,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:09:01,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:09:01,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:09:01,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:09:01,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:09:01,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:09:01,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:09:01,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:09:01,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:09:01,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:09:01,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:09:01,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:09:01,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:09:01,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:09:01,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:09:01,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:09:01,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:09:01,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:09:01,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:09:01,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:09:02,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:09:02,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:09:02,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:09:02,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:09:02,287 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:09:02,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-10-21 23:09:02,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22567d191/44848a0a7ee84bfe9a43bd5e23247c10/FLAGea1611378 [2020-10-21 23:09:02,928 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:09:02,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-10-21 23:09:02,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22567d191/44848a0a7ee84bfe9a43bd5e23247c10/FLAGea1611378 [2020-10-21 23:09:03,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22567d191/44848a0a7ee84bfe9a43bd5e23247c10 [2020-10-21 23:09:03,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:09:03,252 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:09:03,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:09:03,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:09:03,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:09:03,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33960956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03, skipping insertion in model container [2020-10-21 23:09:03,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:09:03,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:09:03,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:09:03,759 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:09:03,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:09:03,882 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:09:03,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03 WrapperNode [2020-10-21 23:09:03,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:09:03,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:09:03,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:09:03,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:09:03,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:09:03,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:09:03,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:09:03,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:09:03,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (1/1) ... [2020-10-21 23:09:03,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:09:03,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:09:03,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:09:03,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:09:03,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (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 [2020-10-21 23:09:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:09:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:09:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:09:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:09:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 23:09:04,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 23:09:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 23:09:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 23:09:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:09:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:09:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:09:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:09:04,042 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:09:04,427 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:09:04,427 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 23:09:04,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:09:04 BoogieIcfgContainer [2020-10-21 23:09:04,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:09:04,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:09:04,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:09:04,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:09:04,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:09:03" (1/3) ... [2020-10-21 23:09:04,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d52486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:09:04, skipping insertion in model container [2020-10-21 23:09:04,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:03" (2/3) ... [2020-10-21 23:09:04,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d52486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:09:04, skipping insertion in model container [2020-10-21 23:09:04,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:09:04" (3/3) ... [2020-10-21 23:09:04,439 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2020-10-21 23:09:04,453 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:09:04,454 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:09:04,464 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:09:04,465 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:09:04,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,492 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,492 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,494 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,494 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,495 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,495 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,508 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,508 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:04,510 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:09:04,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-21 23:09:04,541 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:09:04,541 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:09:04,542 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:09:04,542 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:09:04,542 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:09:04,542 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:09:04,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:09:04,543 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:09:04,554 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:09:04,555 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 64 transitions, 138 flow [2020-10-21 23:09:04,557 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 64 transitions, 138 flow [2020-10-21 23:09:04,559 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 68 places, 64 transitions, 138 flow [2020-10-21 23:09:04,603 INFO L129 PetriNetUnfolder]: 3/62 cut-off events. [2020-10-21 23:09:04,603 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:09:04,608 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 3/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-21 23:09:04,610 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-21 23:09:06,165 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-21 23:09:06,413 INFO L131 LiptonReduction]: Checked pairs total: 1620 [2020-10-21 23:09:06,413 INFO L133 LiptonReduction]: Total number of compositions: 67 [2020-10-21 23:09:06,421 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-10-21 23:09:06,437 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-21 23:09:06,439 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-21 23:09:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 23:09:06,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:06,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-21 23:09:06,466 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:06,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1340707883, now seen corresponding path program 1 times [2020-10-21 23:09:06,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:06,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883123772] [2020-10-21 23:09:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:06,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883123772] [2020-10-21 23:09:06,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:06,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:09:06,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037940342] [2020-10-21 23:09:06,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:09:06,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:06,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:09:06,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:09:06,716 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-21 23:09:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:06,753 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-10-21 23:09:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:09:06,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-21 23:09:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:06,766 INFO L225 Difference]: With dead ends: 72 [2020-10-21 23:09:06,767 INFO L226 Difference]: Without dead ends: 56 [2020-10-21 23:09:06,768 INFO L677 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 [2020-10-21 23:09:06,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-21 23:09:06,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-21 23:09:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-21 23:09:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-10-21 23:09:06,812 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-10-21 23:09:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:06,812 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-10-21 23:09:06,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:09:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-10-21 23:09:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 23:09:06,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:06,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:06,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:09:06,814 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1368723103, now seen corresponding path program 1 times [2020-10-21 23:09:06,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:06,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338423057] [2020-10-21 23:09:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:06,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338423057] [2020-10-21 23:09:06,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:06,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:09:06,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701047133] [2020-10-21 23:09:06,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:09:06,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:06,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:09:06,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:09:06,922 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 4 states. [2020-10-21 23:09:06,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:06,954 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-10-21 23:09:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:09:06,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-21 23:09:06,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:06,955 INFO L225 Difference]: With dead ends: 56 [2020-10-21 23:09:06,956 INFO L226 Difference]: Without dead ends: 40 [2020-10-21 23:09:06,956 INFO L677 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 [2020-10-21 23:09:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-21 23:09:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-21 23:09:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-21 23:09:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-21 23:09:06,963 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 7 [2020-10-21 23:09:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:06,963 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-21 23:09:06,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:09:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-21 23:09:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:09:06,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:06,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:06,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:09:06,965 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1081707285, now seen corresponding path program 1 times [2020-10-21 23:09:06,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:06,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788361065] [2020-10-21 23:09:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:07,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788361065] [2020-10-21 23:09:07,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:07,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:09:07,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338566200] [2020-10-21 23:09:07,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:09:07,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:07,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:09:07,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:07,062 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-10-21 23:09:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:07,101 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-10-21 23:09:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:09:07,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:09:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:07,103 INFO L225 Difference]: With dead ends: 35 [2020-10-21 23:09:07,103 INFO L226 Difference]: Without dead ends: 28 [2020-10-21 23:09:07,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:09:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-21 23:09:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-21 23:09:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-21 23:09:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-10-21 23:09:07,108 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-10-21 23:09:07,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:07,108 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-10-21 23:09:07,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:09:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-10-21 23:09:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:09:07,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:07,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:07,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:09:07,110 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:07,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:07,110 INFO L82 PathProgramCache]: Analyzing trace with hash 370642726, now seen corresponding path program 1 times [2020-10-21 23:09:07,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:07,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758671449] [2020-10-21 23:09:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:07,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758671449] [2020-10-21 23:09:07,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:07,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:09:07,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971538393] [2020-10-21 23:09:07,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:09:07,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:07,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:09:07,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:09:07,167 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-10-21 23:09:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:07,183 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-10-21 23:09:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:09:07,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-21 23:09:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:07,184 INFO L225 Difference]: With dead ends: 35 [2020-10-21 23:09:07,185 INFO L226 Difference]: Without dead ends: 22 [2020-10-21 23:09:07,185 INFO L677 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 [2020-10-21 23:09:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-21 23:09:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-21 23:09:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-21 23:09:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-10-21 23:09:07,190 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-10-21 23:09:07,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:07,190 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-10-21 23:09:07,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:09:07,190 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-10-21 23:09:07,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:09:07,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:07,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:07,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:09:07,192 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:07,192 INFO L82 PathProgramCache]: Analyzing trace with hash -7959878, now seen corresponding path program 2 times [2020-10-21 23:09:07,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:07,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960987409] [2020-10-21 23:09:07,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:07,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960987409] [2020-10-21 23:09:07,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:07,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:09:07,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100612182] [2020-10-21 23:09:07,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:09:07,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:07,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:09:07,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:09:07,250 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-10-21 23:09:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:07,258 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-10-21 23:09:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:09:07,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-21 23:09:07,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:07,273 INFO L225 Difference]: With dead ends: 21 [2020-10-21 23:09:07,273 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 23:09:07,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:09:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 23:09:07,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 23:09:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 23:09:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 23:09:07,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-21 23:09:07,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:07,275 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 23:09:07,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:09:07,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 23:09:07,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 23:09:07,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:09:07,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:09:07 BasicIcfg [2020-10-21 23:09:07,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:09:07,282 INFO L168 Benchmark]: Toolchain (without parser) took 4036.05 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 101.9 MB in the beginning and 214.2 MB in the end (delta: -112.3 MB). Peak memory consumption was 118.8 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:07,283 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 23:09:07,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.35 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 157.2 MB in the end (delta: -56.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:07,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.78 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 154.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:07,291 INFO L168 Benchmark]: Boogie Preprocessor took 27.16 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 153.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:07,293 INFO L168 Benchmark]: RCFGBuilder took 468.60 ms. Allocated memory is still 202.4 MB. Free memory was 152.9 MB in the beginning and 131.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:07,296 INFO L168 Benchmark]: TraceAbstraction took 2848.34 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 131.4 MB in the beginning and 214.3 MB in the end (delta: -82.9 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:07,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 629.35 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 157.2 MB in the end (delta: -56.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.78 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 154.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.16 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 153.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.60 ms. Allocated memory is still 202.4 MB. Free memory was 152.9 MB in the beginning and 131.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2848.34 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 131.4 MB in the beginning and 214.3 MB in the end (delta: -82.9 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 439 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 17 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 68 PlacesBefore, 22 PlacesAfterwards, 64 TransitionsBefore, 15 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 67 TotalNumberOfCompositions, 1620 MoverChecksTotal - PositiveResult [Line: 17]: 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 3 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 58 SDtfs, 56 SDslu, 50 SDs, 0 SdLazy, 32 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 815 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...