/usr/bin/java -Xmx16000000000 -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/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:01:27,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:01:27,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:01:27,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:01:27,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:01:27,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:01:27,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:01:27,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:01:27,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:01:27,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:01:27,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:01:27,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:01:27,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:01:27,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:01:27,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:01:27,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:01:27,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:01:27,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:01:27,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:01:27,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:01:27,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:01:27,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:01:27,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:01:27,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:01:27,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 15:01:27,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 15:01:27,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 15:01:27,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 15:01:27,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 15:01:27,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 15:01:27,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:01:27,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:01:27,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:01:27,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:01:27,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:01:27,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:01:27,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:01:27,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:01:27,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:01:27,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:01:27,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:01:27,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 15:01:27,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:01:27,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:01:27,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:01:27,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:01:27,940 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:01:27,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:01:27,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:01:27,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:01:27,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:01:27,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:01:27,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:01:27,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:01:27,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:01:27,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:01:27,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:01:27,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:01:27,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:01:27,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:01:27,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:01:27,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:01:27,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:01:27,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:01:27,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:01:27,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:01:27,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:01:27,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:01:27,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:01:27,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:01:27,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:01:27,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:01:28,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:01:28,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:01:28,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:01:28,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:01:28,291 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:01:28,293 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-11 15:01:28,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e641448/d8afa6a17c13454799c1d85296b7eb5d/FLAGd21bfe06b [2020-10-11 15:01:28,928 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:01:28,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-11 15:01:28,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e641448/d8afa6a17c13454799c1d85296b7eb5d/FLAGd21bfe06b [2020-10-11 15:01:29,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e641448/d8afa6a17c13454799c1d85296b7eb5d [2020-10-11 15:01:29,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:01:29,300 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:01:29,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:01:29,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:01:29,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:01:29,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:01:29" (1/1) ... [2020-10-11 15:01:29,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9cb2725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:29, skipping insertion in model container [2020-10-11 15:01:29,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:01:29" (1/1) ... [2020-10-11 15:01:29,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:01:29,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:01:29,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:01:29,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:01:30,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:01:30,113 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:01:30,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30 WrapperNode [2020-10-11 15:01:30,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:01:30,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:01:30,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:01:30,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:01:30,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... [2020-10-11 15:01:30,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... [2020-10-11 15:01:30,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:01:30,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:01:30,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:01:30,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:01:30,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... [2020-10-11 15:01:30,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... [2020-10-11 15:01:30,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... [2020-10-11 15:01:30,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... [2020-10-11 15:01:30,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... [2020-10-11 15:01:30,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... [2020-10-11 15:01:30,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... [2020-10-11 15:01:30,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:01:30,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:01:30,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:01:30,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:01:30,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:01:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:01:30,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:01:30,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:01:30,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:01:30,324 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 15:01:30,325 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 15:01:30,325 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 15:01:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 15:01:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 15:01:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 15:01:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:01:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:01:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:01:30,329 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:01:30,673 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:01:30,673 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:01:30,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:01:30 BoogieIcfgContainer [2020-10-11 15:01:30,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:01:30,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:01:30,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:01:30,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:01:30,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:01:29" (1/3) ... [2020-10-11 15:01:30,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611a0658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:01:30, skipping insertion in model container [2020-10-11 15:01:30,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:01:30" (2/3) ... [2020-10-11 15:01:30,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611a0658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:01:30, skipping insertion in model container [2020-10-11 15:01:30,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:01:30" (3/3) ... [2020-10-11 15:01:30,685 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-10-11 15:01:30,696 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:01:30,697 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:01:30,704 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:01:30,704 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:01:30,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,734 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,734 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,736 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,736 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,752 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:01:30,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 15:01:30,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:01:30,791 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:01:30,791 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:01:30,791 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:01:30,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:01:30,792 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:01:30,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:01:30,792 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:01:30,806 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:01:30,808 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-11 15:01:30,810 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-11 15:01:30,812 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 15:01:30,852 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 15:01:30,853 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:01:30,858 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 15:01:30,861 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-11 15:01:32,453 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-11 15:01:32,453 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-11 15:01:32,461 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-11 15:01:32,490 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-11 15:01:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-11 15:01:32,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:01:32,501 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:01:32,502 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:01:32,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:01:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:01:32,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-11 15:01:32,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:01:32,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517302374] [2020-10-11 15:01:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:01:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:01:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:01:32,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517302374] [2020-10-11 15:01:32,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:01:32,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:01:32,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823930285] [2020-10-11 15:01:32,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:01:32,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:01:32,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:01:32,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:01:32,768 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-11 15:01:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:01:32,821 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-11 15:01:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:01:32,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-11 15:01:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:01:32,842 INFO L225 Difference]: With dead ends: 282 [2020-10-11 15:01:32,843 INFO L226 Difference]: Without dead ends: 218 [2020-10-11 15:01:32,844 INFO L673 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 [2020-10-11 15:01:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-11 15:01:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-11 15:01:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-11 15:01:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-11 15:01:32,920 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-11 15:01:32,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:01:32,921 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-11 15:01:32,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:01:32,922 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-11 15:01:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:01:32,923 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:01:32,923 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:01:32,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:01:32,924 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:01:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:01:32,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-11 15:01:32,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:01:32,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175028458] [2020-10-11 15:01:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:01:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:01:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:01:33,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175028458] [2020-10-11 15:01:33,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:01:33,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:01:33,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682536320] [2020-10-11 15:01:33,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:01:33,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:01:33,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:01:33,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:01:33,008 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-11 15:01:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:01:33,055 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-10-11 15:01:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:01:33,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-11 15:01:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:01:33,058 INFO L225 Difference]: With dead ends: 290 [2020-10-11 15:01:33,059 INFO L226 Difference]: Without dead ends: 164 [2020-10-11 15:01:33,059 INFO L673 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 [2020-10-11 15:01:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-11 15:01:33,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-11 15:01:33,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 15:01:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-10-11 15:01:33,076 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-10-11 15:01:33,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:01:33,077 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-10-11 15:01:33,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:01:33,077 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-10-11 15:01:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:01:33,078 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:01:33,078 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:01:33,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:01:33,079 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:01:33,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:01:33,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-10-11 15:01:33,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:01:33,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847626866] [2020-10-11 15:01:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:01:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:01:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:01:33,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847626866] [2020-10-11 15:01:33,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:01:33,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:01:33,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628360301] [2020-10-11 15:01:33,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:01:33,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:01:33,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:01:33,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:01:33,156 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-10-11 15:01:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:01:33,199 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-10-11 15:01:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:01:33,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-11 15:01:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:01:33,203 INFO L225 Difference]: With dead ends: 244 [2020-10-11 15:01:33,204 INFO L226 Difference]: Without dead ends: 128 [2020-10-11 15:01:33,204 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:01:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-11 15:01:33,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-10-11 15:01:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-11 15:01:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-10-11 15:01:33,215 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-10-11 15:01:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:01:33,215 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-10-11 15:01:33,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:01:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-10-11 15:01:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:01:33,216 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:01:33,217 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:01:33,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:01:33,217 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:01:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:01:33,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-11 15:01:33,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:01:33,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630641332] [2020-10-11 15:01:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:01:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:01:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:01:33,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630641332] [2020-10-11 15:01:33,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:01:33,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:01:33,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234082656] [2020-10-11 15:01:33,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:01:33,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:01:33,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:01:33,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:01:33,296 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-10-11 15:01:33,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:01:33,315 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-10-11 15:01:33,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:01:33,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-11 15:01:33,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:01:33,317 INFO L225 Difference]: With dead ends: 140 [2020-10-11 15:01:33,317 INFO L226 Difference]: Without dead ends: 68 [2020-10-11 15:01:33,317 INFO L673 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 [2020-10-11 15:01:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-11 15:01:33,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-11 15:01:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-11 15:01:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-11 15:01:33,323 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-10-11 15:01:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:01:33,324 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-11 15:01:33,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:01:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-11 15:01:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:01:33,325 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:01:33,325 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:01:33,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:01:33,326 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:01:33,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:01:33,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-10-11 15:01:33,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:01:33,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51557916] [2020-10-11 15:01:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:01:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:01:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:01:33,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51557916] [2020-10-11 15:01:33,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:01:33,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:01:33,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939382292] [2020-10-11 15:01:33,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:01:33,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:01:33,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:01:33,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:01:33,454 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-11 15:01:33,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:01:33,487 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-11 15:01:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:01:33,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-11 15:01:33,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:01:33,488 INFO L225 Difference]: With dead ends: 81 [2020-10-11 15:01:33,488 INFO L226 Difference]: Without dead ends: 59 [2020-10-11 15:01:33,489 INFO L673 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 [2020-10-11 15:01:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-11 15:01:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-11 15:01:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-11 15:01:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-11 15:01:33,493 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-11 15:01:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:01:33,494 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-11 15:01:33,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:01:33,494 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-11 15:01:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:01:33,495 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:01:33,495 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:01:33,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:01:33,495 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:01:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:01:33,496 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-11 15:01:33,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:01:33,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196114736] [2020-10-11 15:01:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:01:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:01:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:01:33,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196114736] [2020-10-11 15:01:33,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:01:33,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:01:33,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315610666] [2020-10-11 15:01:33,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:01:33,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:01:33,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:01:33,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:01:33,574 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-11 15:01:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:01:33,612 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-11 15:01:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:01:33,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-11 15:01:33,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:01:33,613 INFO L225 Difference]: With dead ends: 60 [2020-10-11 15:01:33,613 INFO L226 Difference]: Without dead ends: 45 [2020-10-11 15:01:33,614 INFO L673 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 [2020-10-11 15:01:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-11 15:01:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-11 15:01:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-11 15:01:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-11 15:01:33,617 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-11 15:01:33,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:01:33,617 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-11 15:01:33,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:01:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-11 15:01:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:01:33,618 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:01:33,619 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:01:33,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:01:33,619 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:01:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:01:33,619 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-11 15:01:33,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:01:33,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657867325] [2020-10-11 15:01:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:01:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:01:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:01:33,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657867325] [2020-10-11 15:01:33,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:01:33,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:01:33,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205712666] [2020-10-11 15:01:33,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:01:33,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:01:33,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:01:33,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:01:33,692 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-11 15:01:33,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:01:33,736 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-11 15:01:33,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:01:33,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-11 15:01:33,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:01:33,738 INFO L225 Difference]: With dead ends: 42 [2020-10-11 15:01:33,738 INFO L226 Difference]: Without dead ends: 36 [2020-10-11 15:01:33,738 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:01:33,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-11 15:01:33,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-11 15:01:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 15:01:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-11 15:01:33,741 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-11 15:01:33,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:01:33,741 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-11 15:01:33,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:01:33,742 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-11 15:01:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 15:01:33,742 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:01:33,742 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:01:33,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:01:33,743 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:01:33,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:01:33,743 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-11 15:01:33,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:01:33,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447368165] [2020-10-11 15:01:33,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:01:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:01:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:01:33,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447368165] [2020-10-11 15:01:33,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:01:33,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:01:33,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818451359] [2020-10-11 15:01:33,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:01:33,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:01:33,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:01:33,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:01:33,781 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-11 15:01:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:01:33,791 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-11 15:01:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:01:33,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-11 15:01:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:01:33,792 INFO L225 Difference]: With dead ends: 35 [2020-10-11 15:01:33,792 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 15:01:33,792 INFO L673 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 [2020-10-11 15:01:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 15:01:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 15:01:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 15:01:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 15:01:33,793 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-11 15:01:33,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:01:33,793 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 15:01:33,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:01:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 15:01:33,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 15:01:33,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:01:33,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:01:33 BasicIcfg [2020-10-11 15:01:33,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:01:33,800 INFO L168 Benchmark]: Toolchain (without parser) took 4499.80 ms. Allocated memory was 247.5 MB in the beginning and 367.5 MB in the end (delta: 120.1 MB). Free memory was 202.8 MB in the beginning and 231.7 MB in the end (delta: -28.9 MB). Peak memory consumption was 91.2 MB. Max. memory is 14.2 GB. [2020-10-11 15:01:33,801 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:01:33,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 809.36 ms. Allocated memory was 247.5 MB in the beginning and 303.6 MB in the end (delta: 56.1 MB). Free memory was 202.8 MB in the beginning and 254.4 MB in the end (delta: -51.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-11 15:01:33,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.91 ms. Allocated memory is still 303.6 MB. Free memory was 254.4 MB in the beginning and 251.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:01:33,803 INFO L168 Benchmark]: Boogie Preprocessor took 55.89 ms. Allocated memory is still 303.6 MB. Free memory was 251.9 MB in the beginning and 249.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:01:33,804 INFO L168 Benchmark]: RCFGBuilder took 422.81 ms. Allocated memory is still 303.6 MB. Free memory was 249.4 MB in the beginning and 227.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-11 15:01:33,805 INFO L168 Benchmark]: TraceAbstraction took 3119.48 ms. Allocated memory was 303.6 MB in the beginning and 367.5 MB in the end (delta: 64.0 MB). Free memory was 227.5 MB in the beginning and 231.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 59.8 MB. Max. memory is 14.2 GB. [2020-10-11 15:01:33,809 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 809.36 ms. Allocated memory was 247.5 MB in the beginning and 303.6 MB in the end (delta: 56.1 MB). Free memory was 202.8 MB in the beginning and 254.4 MB in the end (delta: -51.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 81.91 ms. Allocated memory is still 303.6 MB. Free memory was 254.4 MB in the beginning and 251.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 55.89 ms. Allocated memory is still 303.6 MB. Free memory was 251.9 MB in the beginning and 249.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 422.81 ms. Allocated memory is still 303.6 MB. Free memory was 249.4 MB in the beginning and 227.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3119.48 ms. Allocated memory was 303.6 MB in the beginning and 367.5 MB in the end (delta: 64.0 MB). Free memory was 227.5 MB in the beginning and 231.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 59.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 847 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 MoverChecksTotal - 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 145 SDtfs, 140 SDslu, 178 SDs, 0 SdLazy, 112 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...