/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:40:36,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:40:36,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:40:36,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:40:36,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:40:36,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:40:36,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:40:36,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:40:36,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:40:36,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:40:36,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:40:36,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:40:36,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:40:36,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:40:36,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:40:36,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:40:36,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:40:36,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:40:36,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:40:36,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:40:36,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:40:36,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:40:36,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:40:36,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:40:36,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:40:36,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:40:36,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:40:36,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:40:36,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:40:36,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:40:36,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:40:36,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:40:36,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:40:36,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:40:36,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:40:36,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:40:36,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:40:36,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:40:36,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:40:36,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:40:36,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:40:36,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:40:36,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:40:36,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:40:36,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:40:36,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:40:36,145 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:40:36,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:40:36,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:40:36,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:40:36,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:40:36,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:40:36,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:40:36,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:40:36,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:40:36,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:40:36,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:40:36,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:40:36,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:40:36,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:40:36,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:40:36,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:40:36,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:40:36,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:40:36,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:40:36,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:40:36,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:40:36,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:40:36,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:40:36,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:40:36,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:40:36,423 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:40:36,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:40:36,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:40:36,443 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:40:36,444 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:40:36,444 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-04-17 22:40:36,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f00d6305/ba23bdd9936d4413b1b897f54b9cd676/FLAGa95554f25 [2020-04-17 22:40:37,055 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:40:37,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-04-17 22:40:37,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f00d6305/ba23bdd9936d4413b1b897f54b9cd676/FLAGa95554f25 [2020-04-17 22:40:37,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f00d6305/ba23bdd9936d4413b1b897f54b9cd676 [2020-04-17 22:40:37,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:40:37,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:40:37,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:40:37,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:40:37,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:40:37,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:40:37" (1/1) ... [2020-04-17 22:40:37,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e49eb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:37, skipping insertion in model container [2020-04-17 22:40:37,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:40:37" (1/1) ... [2020-04-17 22:40:37,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:40:37,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:40:37,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:40:37,991 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:40:38,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:40:38,140 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:40:38,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38 WrapperNode [2020-04-17 22:40:38,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:40:38,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:40:38,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:40:38,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:40:38,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (1/1) ... [2020-04-17 22:40:38,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (1/1) ... [2020-04-17 22:40:38,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:40:38,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:40:38,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:40:38,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:40:38,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (1/1) ... [2020-04-17 22:40:38,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (1/1) ... [2020-04-17 22:40:38,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (1/1) ... [2020-04-17 22:40:38,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (1/1) ... [2020-04-17 22:40:38,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (1/1) ... [2020-04-17 22:40:38,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (1/1) ... [2020-04-17 22:40:38,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (1/1) ... [2020-04-17 22:40:38,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:40:38,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:40:38,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:40:38,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:40:38,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (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 [2020-04-17 22:40:38,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:40:38,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:40:38,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:40:38,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:40:38,305 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:40:38,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:40:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:40:38,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:40:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:40:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:40:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 22:40:38,309 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 22:40:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:40:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:40:38,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:40:38,311 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:40:38,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:40:38,768 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:40:38,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:40:38 BoogieIcfgContainer [2020-04-17 22:40:38,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:40:38,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:40:38,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:40:38,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:40:38,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:40:37" (1/3) ... [2020-04-17 22:40:38,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fcb011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:40:38, skipping insertion in model container [2020-04-17 22:40:38,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:38" (2/3) ... [2020-04-17 22:40:38,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fcb011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:40:38, skipping insertion in model container [2020-04-17 22:40:38,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:40:38" (3/3) ... [2020-04-17 22:40:38,782 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-04-17 22:40:38,793 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:40:38,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:40:38,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:40:38,802 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:40:38,832 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,832 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,833 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,833 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,834 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,834 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,834 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,834 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,835 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,835 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,835 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,836 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,836 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,837 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,837 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,837 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,837 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,838 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,838 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,838 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,838 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,839 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,839 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,843 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,843 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,844 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,844 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,848 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,849 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,849 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,849 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,855 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,855 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,856 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,857 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,862 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,862 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,862 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,862 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:38,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 22:40:38,895 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:40:38,895 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:40:38,896 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:40:38,896 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:40:38,896 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:40:38,896 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:40:38,896 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:40:38,896 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:40:38,912 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-17 22:40:38,914 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-17 22:40:38,967 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-17 22:40:38,968 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:40:38,974 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-17 22:40:38,977 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-17 22:40:39,005 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-17 22:40:39,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:40:39,006 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-17 22:40:39,009 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-17 22:40:39,010 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:40:41,014 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-17 22:40:41,094 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-17 22:40:41,095 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-17 22:40:41,099 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-17 22:40:41,204 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-17 22:40:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-17 22:40:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:40:41,218 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:41,219 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:41,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:41,226 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-17 22:40:41,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:41,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465804794] [2020-04-17 22:40:41,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:40:41,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465804794] [2020-04-17 22:40:41,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:41,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:41,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913544368] [2020-04-17 22:40:41,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:40:41,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:41,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:40:41,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:40:41,440 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-17 22:40:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:41,543 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-17 22:40:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:40:41,544 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 22:40:41,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:41,586 INFO L225 Difference]: With dead ends: 1450 [2020-04-17 22:40:41,586 INFO L226 Difference]: Without dead ends: 1194 [2020-04-17 22:40:41,587 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:40:41,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-17 22:40:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-17 22:40:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-17 22:40:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-17 22:40:41,747 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-17 22:40:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:41,748 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-17 22:40:41,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:40:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-17 22:40:41,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:40:41,751 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:41,751 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:41,752 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:41,752 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-17 22:40:41,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:41,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088334289] [2020-04-17 22:40:41,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:40:41,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088334289] [2020-04-17 22:40:41,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:41,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:41,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588945428] [2020-04-17 22:40:41,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:40:41,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:41,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:40:41,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:40:41,917 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-17 22:40:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:41,962 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-17 22:40:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:40:41,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:40:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:41,973 INFO L225 Difference]: With dead ends: 1322 [2020-04-17 22:40:41,973 INFO L226 Difference]: Without dead ends: 1066 [2020-04-17 22:40:41,974 INFO L678 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 [2020-04-17 22:40:41,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-17 22:40:42,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-17 22:40:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-17 22:40:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-17 22:40:42,018 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-17 22:40:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:42,019 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-17 22:40:42,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:40:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-17 22:40:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:40:42,022 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:42,022 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:42,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:42,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:42,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-04-17 22:40:42,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:42,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915188606] [2020-04-17 22:40:42,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:40:42,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915188606] [2020-04-17 22:40:42,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:42,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:42,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584304312] [2020-04-17 22:40:42,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:40:42,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:42,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:40:42,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:40:42,093 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-04-17 22:40:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:42,127 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-17 22:40:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:40:42,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:40:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:42,136 INFO L225 Difference]: With dead ends: 1162 [2020-04-17 22:40:42,136 INFO L226 Difference]: Without dead ends: 970 [2020-04-17 22:40:42,137 INFO L678 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 [2020-04-17 22:40:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-17 22:40:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-17 22:40:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-17 22:40:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-17 22:40:42,177 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-17 22:40:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:42,178 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-17 22:40:42,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:40:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-17 22:40:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:40:42,180 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:42,180 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:42,180 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:42,181 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-04-17 22:40:42,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:42,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039777593] [2020-04-17 22:40:42,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:40:42,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039777593] [2020-04-17 22:40:42,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:42,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:42,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859595755] [2020-04-17 22:40:42,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:40:42,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:42,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:40:42,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:40:42,238 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-04-17 22:40:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:42,270 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-17 22:40:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:40:42,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 22:40:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:42,278 INFO L225 Difference]: With dead ends: 1042 [2020-04-17 22:40:42,279 INFO L226 Difference]: Without dead ends: 898 [2020-04-17 22:40:42,279 INFO L678 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 [2020-04-17 22:40:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-17 22:40:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-17 22:40:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-17 22:40:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-17 22:40:42,312 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-17 22:40:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:42,312 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-17 22:40:42,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:40:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-17 22:40:42,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:40:42,315 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:42,315 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:42,315 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-04-17 22:40:42,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:42,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937891034] [2020-04-17 22:40:42,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:40:42,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937891034] [2020-04-17 22:40:42,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:42,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:42,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698782509] [2020-04-17 22:40:42,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:40:42,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:42,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:40:42,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:40:42,431 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-04-17 22:40:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:42,462 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-04-17 22:40:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:40:42,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:40:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:42,470 INFO L225 Difference]: With dead ends: 952 [2020-04-17 22:40:42,470 INFO L226 Difference]: Without dead ends: 844 [2020-04-17 22:40:42,471 INFO L678 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 [2020-04-17 22:40:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-04-17 22:40:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-04-17 22:40:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-04-17 22:40:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-04-17 22:40:42,524 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-04-17 22:40:42,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:42,524 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-04-17 22:40:42,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:40:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-04-17 22:40:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:40:42,527 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:42,527 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:42,527 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-04-17 22:40:42,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:42,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937013609] [2020-04-17 22:40:42,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:40:42,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937013609] [2020-04-17 22:40:42,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:42,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:40:42,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426056557] [2020-04-17 22:40:42,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:40:42,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:42,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:40:42,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:40:42,598 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-04-17 22:40:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:42,652 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-04-17 22:40:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:40:42,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:40:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:42,656 INFO L225 Difference]: With dead ends: 1063 [2020-04-17 22:40:42,657 INFO L226 Difference]: Without dead ends: 472 [2020-04-17 22:40:42,657 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:40:42,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-04-17 22:40:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-04-17 22:40:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-17 22:40:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-04-17 22:40:42,672 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-04-17 22:40:42,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:42,673 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-04-17 22:40:42,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:40:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-04-17 22:40:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:40:42,674 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:42,674 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:42,675 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-04-17 22:40:42,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:42,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188642701] [2020-04-17 22:40:42,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:40:42,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188642701] [2020-04-17 22:40:42,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:42,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:40:42,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030629053] [2020-04-17 22:40:42,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:40:42,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:42,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:40:42,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:40:42,742 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-04-17 22:40:42,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:42,790 INFO L93 Difference]: Finished difference Result 622 states and 1921 transitions. [2020-04-17 22:40:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:40:42,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-17 22:40:42,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:42,793 INFO L225 Difference]: With dead ends: 622 [2020-04-17 22:40:42,793 INFO L226 Difference]: Without dead ends: 304 [2020-04-17 22:40:42,795 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:40:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-17 22:40:42,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-04-17 22:40:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-04-17 22:40:42,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 882 transitions. [2020-04-17 22:40:42,805 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 882 transitions. Word has length 16 [2020-04-17 22:40:42,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:42,805 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 882 transitions. [2020-04-17 22:40:42,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:40:42,805 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 882 transitions. [2020-04-17 22:40:42,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:40:42,806 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:42,806 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:42,807 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:42,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:42,807 INFO L82 PathProgramCache]: Analyzing trace with hash -583625760, now seen corresponding path program 1 times [2020-04-17 22:40:42,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:42,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700222170] [2020-04-17 22:40:42,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:40:42,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700222170] [2020-04-17 22:40:42,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:42,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:40:42,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202081987] [2020-04-17 22:40:42,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:40:42,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:42,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:40:42,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:40:42,931 INFO L87 Difference]: Start difference. First operand 304 states and 882 transitions. Second operand 5 states. [2020-04-17 22:40:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:42,988 INFO L93 Difference]: Finished difference Result 388 states and 1110 transitions. [2020-04-17 22:40:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:40:42,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-17 22:40:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:42,990 INFO L225 Difference]: With dead ends: 388 [2020-04-17 22:40:42,990 INFO L226 Difference]: Without dead ends: 172 [2020-04-17 22:40:42,991 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:40:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-17 22:40:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-17 22:40:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-17 22:40:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 452 transitions. [2020-04-17 22:40:42,998 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 452 transitions. Word has length 17 [2020-04-17 22:40:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:42,999 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 452 transitions. [2020-04-17 22:40:43,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:40:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 452 transitions. [2020-04-17 22:40:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:40:43,006 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:43,006 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:43,006 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:43,009 INFO L82 PathProgramCache]: Analyzing trace with hash -180488596, now seen corresponding path program 1 times [2020-04-17 22:40:43,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:43,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807911757] [2020-04-17 22:40:43,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:40:43,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807911757] [2020-04-17 22:40:43,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:43,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:40:43,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404276234] [2020-04-17 22:40:43,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:40:43,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:43,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:40:43,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:40:43,088 INFO L87 Difference]: Start difference. First operand 172 states and 452 transitions. Second operand 5 states. [2020-04-17 22:40:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:43,132 INFO L93 Difference]: Finished difference Result 148 states and 376 transitions. [2020-04-17 22:40:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:40:43,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:40:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:43,133 INFO L225 Difference]: With dead ends: 148 [2020-04-17 22:40:43,133 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:40:43,134 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:40:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:40:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:40:43,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:40:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:40:43,135 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 22:40:43,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:43,135 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:40:43,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:40:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:40:43,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:40:43,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:40:43 BasicIcfg [2020-04-17 22:40:43,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:40:43,142 INFO L168 Benchmark]: Toolchain (without parser) took 5815.91 ms. Allocated memory was 145.2 MB in the beginning and 286.8 MB in the end (delta: 141.6 MB). Free memory was 102.1 MB in the beginning and 155.9 MB in the end (delta: -53.8 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:43,143 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 22:40:43,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.38 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.1 MB in the beginning and 157.6 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:43,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.32 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:43,145 INFO L168 Benchmark]: Boogie Preprocessor took 38.48 ms. Allocated memory is still 202.9 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:43,146 INFO L168 Benchmark]: RCFGBuilder took 536.59 ms. Allocated memory is still 202.9 MB. Free memory was 153.5 MB in the beginning and 128.4 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:43,147 INFO L168 Benchmark]: TraceAbstraction took 4365.89 ms. Allocated memory was 202.9 MB in the beginning and 286.8 MB in the end (delta: 83.9 MB). Free memory was 128.4 MB in the beginning and 155.9 MB in the end (delta: -27.6 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:43,151 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 790.38 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.1 MB in the beginning and 157.6 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.32 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.48 ms. Allocated memory is still 202.9 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 536.59 ms. Allocated memory is still 202.9 MB. Free memory was 153.5 MB in the beginning and 128.4 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4365.89 ms. Allocated memory was 202.9 MB in the beginning and 286.8 MB in the end (delta: 83.9 MB). Free memory was 128.4 MB in the beginning and 155.9 MB in the end (delta: -27.6 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1045 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 263 SDtfs, 285 SDslu, 366 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...