/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:22:32,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:22:32,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:22:32,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:22:32,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:22:32,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:22:32,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:22:32,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:22:32,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:22:32,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:22:32,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:22:32,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:22:32,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:22:32,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:22:32,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:22:32,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:22:32,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:22:32,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:22:32,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:22:32,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:22:32,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:22:32,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:22:32,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:22:32,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:22:32,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 22:22:32,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 22:22:32,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 22:22:32,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 22:22:32,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 22:22:32,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 22:22:32,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:22:32,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:22:32,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:22:32,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:22:32,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:22:32,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:22:32,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:22:32,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:22:32,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:22:32,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:22:32,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:22:32,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 22:22:32,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:22:32,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:22:32,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:22:32,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:22:32,938 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:22:32,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:22:32,939 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:22:32,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:22:32,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:22:32,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:22:32,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:22:32,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:22:32,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:22:32,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:22:32,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:22:32,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:22:32,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:22:32,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:22:32,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:22:32,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:22:32,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:22:32,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:22:32,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:22:32,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:22:32,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:22:32,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:22:32,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:22:32,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:22:32,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:22:32,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:22:33,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:22:33,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:22:33,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:22:33,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:22:33,406 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:22:33,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-09-14 22:22:33,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21406fa33/00eba8301cfe48adb0b5f449554e4829/FLAGc189c10d3 [2020-09-14 22:22:34,062 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:22:34,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-09-14 22:22:34,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21406fa33/00eba8301cfe48adb0b5f449554e4829/FLAGc189c10d3 [2020-09-14 22:22:34,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21406fa33/00eba8301cfe48adb0b5f449554e4829 [2020-09-14 22:22:34,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:22:34,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:22:34,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:22:34,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:22:34,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:22:34,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:22:34" (1/1) ... [2020-09-14 22:22:34,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf34262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:34, skipping insertion in model container [2020-09-14 22:22:34,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:22:34" (1/1) ... [2020-09-14 22:22:34,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:22:34,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:22:34,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:22:34,921 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:22:34,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:22:35,059 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:22:35,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35 WrapperNode [2020-09-14 22:22:35,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:22:35,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:22:35,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:22:35,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:22:35,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... [2020-09-14 22:22:35,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... [2020-09-14 22:22:35,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:22:35,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:22:35,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:22:35,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:22:35,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... [2020-09-14 22:22:35,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... [2020-09-14 22:22:35,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... [2020-09-14 22:22:35,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... [2020-09-14 22:22:35,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... [2020-09-14 22:22:35,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... [2020-09-14 22:22:35,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... [2020-09-14 22:22:35,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:22:35,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:22:35,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:22:35,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:22:35,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-14 22:22:35,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:22:35,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:22:35,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:22:35,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:22:35,237 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:22:35,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:22:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:22:35,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:22:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:22:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:22:35,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:22:35,241 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:22:35,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:22:35,550 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:22:35,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:22:35 BoogieIcfgContainer [2020-09-14 22:22:35,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:22:35,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:22:35,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:22:35,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:22:35,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:22:34" (1/3) ... [2020-09-14 22:22:35,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77850294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:22:35, skipping insertion in model container [2020-09-14 22:22:35,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:22:35" (2/3) ... [2020-09-14 22:22:35,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77850294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:22:35, skipping insertion in model container [2020-09-14 22:22:35,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:22:35" (3/3) ... [2020-09-14 22:22:35,569 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2020-09-14 22:22:35,583 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:22:35,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:22:35,595 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:22:35,596 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:22:35,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,645 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,645 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:22:35,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-14 22:22:35,705 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:22:35,706 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:22:35,706 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:22:35,706 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:22:35,706 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:22:35,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:22:35,707 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:22:35,707 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:22:35,735 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-09-14 22:22:35,738 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-09-14 22:22:35,787 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-09-14 22:22:35,788 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:22:35,793 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-14 22:22:35,796 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-09-14 22:22:35,815 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-09-14 22:22:35,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:22:35,816 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-14 22:22:35,818 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-14 22:22:35,820 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:22:37,273 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-09-14 22:22:37,273 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-14 22:22:37,278 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-14 22:22:37,292 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-14 22:22:37,295 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-14 22:22:37,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-14 22:22:37,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:22:37,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-14 22:22:37,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:22:37,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:22:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-09-14 22:22:37,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:22:37,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107608609] [2020-09-14 22:22:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:22:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:22:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:22:37,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107608609] [2020-09-14 22:22:37,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:22:37,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:22:37,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807880879] [2020-09-14 22:22:37,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:22:37,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:22:37,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:22:37,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:22:37,599 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-14 22:22:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:22:37,638 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-09-14 22:22:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:22:37,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-14 22:22:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:22:37,654 INFO L225 Difference]: With dead ends: 70 [2020-09-14 22:22:37,654 INFO L226 Difference]: Without dead ends: 54 [2020-09-14 22:22:37,656 INFO L675 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 [2020-09-14 22:22:37,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-14 22:22:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-14 22:22:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-14 22:22:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-09-14 22:22:37,706 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-09-14 22:22:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:22:37,706 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-09-14 22:22:37,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:22:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-09-14 22:22:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-14 22:22:37,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:22:37,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:22:37,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:22:37,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:22:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:22:37,709 INFO L82 PathProgramCache]: Analyzing trace with hash 417538412, now seen corresponding path program 1 times [2020-09-14 22:22:37,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:22:37,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799881476] [2020-09-14 22:22:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:22:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:22:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:22:37,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799881476] [2020-09-14 22:22:37,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:22:37,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:22:37,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416565607] [2020-09-14 22:22:37,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:22:37,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:22:37,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:22:37,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:22:37,804 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 3 states. [2020-09-14 22:22:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:22:37,813 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-09-14 22:22:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:22:37,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-14 22:22:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:22:37,814 INFO L225 Difference]: With dead ends: 53 [2020-09-14 22:22:37,815 INFO L226 Difference]: Without dead ends: 53 [2020-09-14 22:22:37,815 INFO L675 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 [2020-09-14 22:22:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-14 22:22:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-14 22:22:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-14 22:22:37,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-09-14 22:22:37,824 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-09-14 22:22:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:22:37,824 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-09-14 22:22:37,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:22:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-09-14 22:22:37,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 22:22:37,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:22:37,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:22:37,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:22:37,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:22:37,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:22:37,827 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-09-14 22:22:37,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:22:37,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017419767] [2020-09-14 22:22:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:22:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:22:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:22:37,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017419767] [2020-09-14 22:22:37,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:22:37,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:22:37,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059745279] [2020-09-14 22:22:37,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:22:37,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:22:37,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:22:37,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:22:37,904 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 4 states. [2020-09-14 22:22:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:22:37,931 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-09-14 22:22:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:22:37,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-14 22:22:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:22:37,933 INFO L225 Difference]: With dead ends: 60 [2020-09-14 22:22:37,933 INFO L226 Difference]: Without dead ends: 36 [2020-09-14 22:22:37,934 INFO L675 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 [2020-09-14 22:22:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-14 22:22:37,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-14 22:22:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-14 22:22:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-09-14 22:22:37,939 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-09-14 22:22:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:22:37,939 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-09-14 22:22:37,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:22:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-09-14 22:22:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 22:22:37,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:22:37,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:22:37,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:22:37,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:22:37,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:22:37,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-09-14 22:22:37,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:22:37,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635461166] [2020-09-14 22:22:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:22:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:22:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:22:38,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635461166] [2020-09-14 22:22:38,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:22:38,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:22:38,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124134026] [2020-09-14 22:22:38,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:22:38,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:22:38,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:22:38,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:22:38,027 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 4 states. [2020-09-14 22:22:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:22:38,054 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-09-14 22:22:38,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:22:38,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 22:22:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:22:38,055 INFO L225 Difference]: With dead ends: 39 [2020-09-14 22:22:38,055 INFO L226 Difference]: Without dead ends: 29 [2020-09-14 22:22:38,056 INFO L675 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 [2020-09-14 22:22:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-14 22:22:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-14 22:22:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-14 22:22:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-09-14 22:22:38,060 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-09-14 22:22:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:22:38,061 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-09-14 22:22:38,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:22:38,061 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-09-14 22:22:38,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:22:38,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:22:38,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:22:38,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:22:38,062 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:22:38,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:22:38,063 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 1 times [2020-09-14 22:22:38,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:22:38,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339756779] [2020-09-14 22:22:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:22:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:22:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:22:38,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339756779] [2020-09-14 22:22:38,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:22:38,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:22:38,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133314495] [2020-09-14 22:22:38,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:22:38,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:22:38,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:22:38,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:22:38,148 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 5 states. [2020-09-14 22:22:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:22:38,188 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-09-14 22:22:38,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:22:38,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-14 22:22:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:22:38,189 INFO L225 Difference]: With dead ends: 27 [2020-09-14 22:22:38,189 INFO L226 Difference]: Without dead ends: 22 [2020-09-14 22:22:38,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:22:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-14 22:22:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-14 22:22:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-14 22:22:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-09-14 22:22:38,193 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-09-14 22:22:38,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:22:38,193 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-09-14 22:22:38,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:22:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-09-14 22:22:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:22:38,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:22:38,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:22:38,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:22:38,195 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:22:38,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:22:38,195 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-09-14 22:22:38,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:22:38,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431234340] [2020-09-14 22:22:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:22:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:22:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:22:38,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431234340] [2020-09-14 22:22:38,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:22:38,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:22:38,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263377105] [2020-09-14 22:22:38,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:22:38,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:22:38,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:22:38,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:22:38,238 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-09-14 22:22:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:22:38,242 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-09-14 22:22:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:22:38,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-14 22:22:38,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:22:38,243 INFO L225 Difference]: With dead ends: 21 [2020-09-14 22:22:38,243 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:22:38,244 INFO L675 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 [2020-09-14 22:22:38,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:22:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:22:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:22:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:22:38,245 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-14 22:22:38,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:22:38,245 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:22:38,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:22:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:22:38,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:22:38,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:22:38,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:22:38 BasicIcfg [2020-09-14 22:22:38,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:22:38,254 INFO L168 Benchmark]: Toolchain (without parser) took 3906.85 ms. Allocated memory was 138.9 MB in the beginning and 249.0 MB in the end (delta: 110.1 MB). Free memory was 99.0 MB in the beginning and 142.0 MB in the end (delta: -43.0 MB). Peak memory consumption was 67.1 MB. Max. memory is 7.1 GB. [2020-09-14 22:22:38,255 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 22:22:38,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.54 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 98.4 MB in the beginning and 159.8 MB in the end (delta: -61.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:22:38,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.53 ms. Allocated memory is still 202.9 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:22:38,258 INFO L168 Benchmark]: Boogie Preprocessor took 30.57 ms. Allocated memory is still 202.9 MB. Free memory was 157.8 MB in the beginning and 156.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 22:22:38,258 INFO L168 Benchmark]: RCFGBuilder took 405.94 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 136.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:22:38,259 INFO L168 Benchmark]: TraceAbstraction took 2691.87 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 135.8 MB in the beginning and 142.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-09-14 22:22:38,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.54 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 98.4 MB in the beginning and 159.8 MB in the end (delta: -61.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.53 ms. Allocated memory is still 202.9 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.57 ms. Allocated memory is still 202.9 MB. Free memory was 157.8 MB in the beginning and 156.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.94 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 136.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2691.87 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 135.8 MB in the beginning and 142.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 372 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1251 CheckedPairsTotal, 49 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 71 SDtfs, 42 SDslu, 61 SDs, 0 SdLazy, 47 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1116 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...