/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/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:50:33,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:50:33,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:50:33,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:50:33,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:50:33,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:50:33,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:50:33,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:50:33,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:50:33,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:50:33,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:50:33,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:50:33,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:50:33,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:50:33,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:50:33,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:50:33,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:50:33,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:50:33,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:50:33,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:50:33,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:50:33,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:50:33,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:50:33,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:50:33,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:50:33,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:50:33,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:50:33,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:50:33,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:50:33,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:50:33,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:50:33,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:50:33,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:50:33,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:50:33,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:50:33,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:50:33,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:50:33,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:50:33,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:50:33,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:50:33,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:50:33,210 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 21:50:33,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:50:33,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:50:33,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:50:33,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:50:33,225 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:50:33,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:50:33,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:50:33,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:50:33,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:50:33,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:50:33,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:50:33,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:50:33,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:50:33,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:50:33,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:50:33,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:50:33,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:50:33,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:50:33,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:50:33,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:50:33,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:50:33,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:50:33,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:50:33,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:50:33,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:50:33,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:50:33,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:50:33,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:50:33,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:50:33,491 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:50:33,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:50:33,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:50:33,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:50:33,510 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:50:33,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-17 21:50:33,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb853ab0a/85378ea0e1224c9ca34722a62d1a5010/FLAG2454ad540 [2020-04-17 21:50:34,152 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:50:34,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-17 21:50:34,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb853ab0a/85378ea0e1224c9ca34722a62d1a5010/FLAG2454ad540 [2020-04-17 21:50:34,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb853ab0a/85378ea0e1224c9ca34722a62d1a5010 [2020-04-17 21:50:34,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:50:34,477 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:50:34,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:50:34,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:50:34,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:50:34,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:50:34" (1/1) ... [2020-04-17 21:50:34,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fceb37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:34, skipping insertion in model container [2020-04-17 21:50:34,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:50:34" (1/1) ... [2020-04-17 21:50:34,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:50:34,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:50:35,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:50:35,029 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:50:35,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:50:35,169 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:50:35,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35 WrapperNode [2020-04-17 21:50:35,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:50:35,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:50:35,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:50:35,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:50:35,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (1/1) ... [2020-04-17 21:50:35,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (1/1) ... [2020-04-17 21:50:35,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:50:35,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:50:35,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:50:35,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:50:35,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (1/1) ... [2020-04-17 21:50:35,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (1/1) ... [2020-04-17 21:50:35,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (1/1) ... [2020-04-17 21:50:35,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (1/1) ... [2020-04-17 21:50:35,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (1/1) ... [2020-04-17 21:50:35,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (1/1) ... [2020-04-17 21:50:35,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (1/1) ... [2020-04-17 21:50:35,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:50:35,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:50:35,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:50:35,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:50:35,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (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 21:50:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:50:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:50:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:50:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:50:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:50:35,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:50:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:50:35,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:50:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:50:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:50:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:50:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:50:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:50:35,326 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 21:50:35,731 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:50:35,731 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:50:35,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:50:35 BoogieIcfgContainer [2020-04-17 21:50:35,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:50:35,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:50:35,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:50:35,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:50:35,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:50:34" (1/3) ... [2020-04-17 21:50:35,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7523410c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:50:35, skipping insertion in model container [2020-04-17 21:50:35,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:35" (2/3) ... [2020-04-17 21:50:35,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7523410c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:50:35, skipping insertion in model container [2020-04-17 21:50:35,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:50:35" (3/3) ... [2020-04-17 21:50:35,745 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-04-17 21:50:35,757 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:50:35,757 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:50:35,766 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:50:35,767 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:50:35,806 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,806 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,806 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,808 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,808 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,809 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,809 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,809 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,810 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,810 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,811 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,812 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,813 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,813 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,814 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,814 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,815 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,815 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,824 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,824 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,825 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,825 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,834 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,835 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,836 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,846 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,846 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,846 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,847 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:35,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:50:35,886 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:50:35,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:50:35,887 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:50:35,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:50:35,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:50:35,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:50:35,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:50:35,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:50:35,908 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 21:50:35,911 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 21:50:35,976 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 21:50:35,977 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:50:35,983 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:50:35,986 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 21:50:36,004 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 21:50:36,004 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:50:36,005 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:50:36,007 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:50:36,008 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:50:37,759 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 21:50:37,984 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-17 21:50:37,985 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 21:50:37,989 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 21:50:38,016 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 21:50:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 21:50:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:50:38,026 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:38,027 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:38,028 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:38,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:38,034 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-17 21:50:38,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:38,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059754135] [2020-04-17 21:50:38,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:38,276 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 21:50:38,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059754135] [2020-04-17 21:50:38,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:38,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:50:38,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277893554] [2020-04-17 21:50:38,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:50:38,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:38,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:50:38,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:38,297 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 21:50:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:38,384 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-17 21:50:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:50:38,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:50:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:38,415 INFO L225 Difference]: With dead ends: 290 [2020-04-17 21:50:38,416 INFO L226 Difference]: Without dead ends: 226 [2020-04-17 21:50:38,418 INFO L678 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 [2020-04-17 21:50:38,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-17 21:50:38,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-17 21:50:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-17 21:50:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-17 21:50:38,516 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-17 21:50:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:38,517 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-17 21:50:38,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:50:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-17 21:50:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:50:38,519 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:38,519 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:38,519 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:38,520 INFO L82 PathProgramCache]: Analyzing trace with hash -838449604, now seen corresponding path program 1 times [2020-04-17 21:50:38,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:38,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056847233] [2020-04-17 21:50:38,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:38,588 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 21:50:38,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056847233] [2020-04-17 21:50:38,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:38,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:50:38,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655290044] [2020-04-17 21:50:38,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:50:38,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:38,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:50:38,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:38,591 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-17 21:50:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:38,606 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-04-17 21:50:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:50:38,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 21:50:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:38,610 INFO L225 Difference]: With dead ends: 198 [2020-04-17 21:50:38,610 INFO L226 Difference]: Without dead ends: 198 [2020-04-17 21:50:38,611 INFO L678 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 [2020-04-17 21:50:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-04-17 21:50:38,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-04-17 21:50:38,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-04-17 21:50:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-04-17 21:50:38,631 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 9 [2020-04-17 21:50:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:38,632 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-04-17 21:50:38,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:50:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-04-17 21:50:38,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:50:38,634 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:38,634 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:38,634 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 1 times [2020-04-17 21:50:38,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:38,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195892446] [2020-04-17 21:50:38,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:38,719 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 21:50:38,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195892446] [2020-04-17 21:50:38,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:38,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:50:38,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269629809] [2020-04-17 21:50:38,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:50:38,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:38,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:50:38,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:50:38,721 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 4 states. [2020-04-17 21:50:38,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:38,769 INFO L93 Difference]: Finished difference Result 342 states and 872 transitions. [2020-04-17 21:50:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:50:38,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:50:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:38,775 INFO L225 Difference]: With dead ends: 342 [2020-04-17 21:50:38,775 INFO L226 Difference]: Without dead ends: 234 [2020-04-17 21:50:38,775 INFO L678 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 [2020-04-17 21:50:38,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-04-17 21:50:38,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 198. [2020-04-17 21:50:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-04-17 21:50:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 506 transitions. [2020-04-17 21:50:38,799 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 506 transitions. Word has length 11 [2020-04-17 21:50:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:38,800 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 506 transitions. [2020-04-17 21:50:38,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:50:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 506 transitions. [2020-04-17 21:50:38,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:50:38,803 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:38,803 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:38,804 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:38,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:38,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1324362317, now seen corresponding path program 2 times [2020-04-17 21:50:38,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:38,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449823726] [2020-04-17 21:50:38,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:38,910 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 21:50:38,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449823726] [2020-04-17 21:50:38,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:38,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:50:38,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999465459] [2020-04-17 21:50:38,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:50:38,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:38,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:50:38,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:50:38,913 INFO L87 Difference]: Start difference. First operand 198 states and 506 transitions. Second operand 4 states. [2020-04-17 21:50:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:38,944 INFO L93 Difference]: Finished difference Result 218 states and 540 transitions. [2020-04-17 21:50:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:50:38,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:50:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:38,946 INFO L225 Difference]: With dead ends: 218 [2020-04-17 21:50:38,946 INFO L226 Difference]: Without dead ends: 154 [2020-04-17 21:50:38,946 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 21:50:38,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-17 21:50:38,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-17 21:50:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-17 21:50:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-04-17 21:50:38,954 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-04-17 21:50:38,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:38,955 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-04-17 21:50:38,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:50:38,955 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-17 21:50:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:50:38,956 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:38,957 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:38,957 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:38,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:38,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-04-17 21:50:38,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:38,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721780309] [2020-04-17 21:50:38,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:39,008 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 21:50:39,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721780309] [2020-04-17 21:50:39,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:39,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:50:39,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564863919] [2020-04-17 21:50:39,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:50:39,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:39,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:50:39,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:39,012 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-04-17 21:50:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:39,025 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-04-17 21:50:39,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:50:39,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-17 21:50:39,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:39,026 INFO L225 Difference]: With dead ends: 174 [2020-04-17 21:50:39,026 INFO L226 Difference]: Without dead ends: 72 [2020-04-17 21:50:39,026 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:39,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-17 21:50:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-17 21:50:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-17 21:50:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-17 21:50:39,030 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-17 21:50:39,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:39,030 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-17 21:50:39,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:50:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-17 21:50:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:50:39,031 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:39,031 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:39,032 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-04-17 21:50:39,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:39,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782373711] [2020-04-17 21:50:39,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:39,090 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 21:50:39,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782373711] [2020-04-17 21:50:39,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:39,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:50:39,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568146992] [2020-04-17 21:50:39,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:50:39,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:39,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:50:39,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:50:39,092 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-04-17 21:50:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:39,120 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-17 21:50:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:50:39,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:50:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:39,122 INFO L225 Difference]: With dead ends: 85 [2020-04-17 21:50:39,122 INFO L226 Difference]: Without dead ends: 61 [2020-04-17 21:50:39,122 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 21:50:39,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-17 21:50:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-17 21:50:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-17 21:50:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-17 21:50:39,125 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-17 21:50:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:39,126 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-17 21:50:39,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:50:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-17 21:50:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:50:39,127 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:39,127 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:39,127 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-17 21:50:39,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:39,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844713181] [2020-04-17 21:50:39,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:39,216 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 21:50:39,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844713181] [2020-04-17 21:50:39,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:39,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:50:39,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192619817] [2020-04-17 21:50:39,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:50:39,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:39,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:50:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:50:39,219 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-04-17 21:50:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:39,268 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-17 21:50:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:50:39,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 21:50:39,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:39,269 INFO L225 Difference]: With dead ends: 62 [2020-04-17 21:50:39,269 INFO L226 Difference]: Without dead ends: 47 [2020-04-17 21:50:39,269 INFO L678 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 [2020-04-17 21:50:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-17 21:50:39,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-17 21:50:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-17 21:50:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-17 21:50:39,272 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-17 21:50:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:39,272 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-17 21:50:39,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:50:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-17 21:50:39,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 21:50:39,273 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:39,273 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:39,274 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:39,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-17 21:50:39,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:39,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816201992] [2020-04-17 21:50:39,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:39,343 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 21:50:39,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816201992] [2020-04-17 21:50:39,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:39,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:50:39,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127280438] [2020-04-17 21:50:39,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:50:39,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:39,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:50:39,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:50:39,347 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-04-17 21:50:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:39,397 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-17 21:50:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:50:39,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 21:50:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:39,398 INFO L225 Difference]: With dead ends: 44 [2020-04-17 21:50:39,399 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 21:50:39,399 INFO L678 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 [2020-04-17 21:50:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 21:50:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 21:50:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 21:50:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-17 21:50:39,401 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-17 21:50:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:39,401 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-17 21:50:39,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:50:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-17 21:50:39,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 21:50:39,402 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:39,402 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 21:50:39,402 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:39,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:39,403 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-17 21:50:39,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:39,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10179503] [2020-04-17 21:50:39,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:39,452 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 21:50:39,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10179503] [2020-04-17 21:50:39,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:39,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:50:39,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073725382] [2020-04-17 21:50:39,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:50:39,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:39,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:50:39,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:39,454 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 3 states. [2020-04-17 21:50:39,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:39,458 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-17 21:50:39,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:50:39,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 21:50:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:39,459 INFO L225 Difference]: With dead ends: 37 [2020-04-17 21:50:39,459 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:50:39,460 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:50:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:50:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:50:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:50:39,461 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 21:50:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:39,461 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:50:39,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:50:39,461 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:50:39,461 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:50:39,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:50:39 BasicIcfg [2020-04-17 21:50:39,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:50:39,467 INFO L168 Benchmark]: Toolchain (without parser) took 5009.55 ms. Allocated memory was 137.4 MB in the beginning and 250.1 MB in the end (delta: 112.7 MB). Free memory was 100.3 MB in the beginning and 179.5 MB in the end (delta: -79.2 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:39,468 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 21:50:39,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.72 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.5 MB in the beginning and 157.5 MB in the end (delta: -59.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:39,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.48 ms. Allocated memory is still 200.8 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:39,470 INFO L168 Benchmark]: Boogie Preprocessor took 26.88 ms. Allocated memory is still 200.8 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:39,471 INFO L168 Benchmark]: RCFGBuilder took 484.40 ms. Allocated memory is still 200.8 MB. Free memory was 154.1 MB in the beginning and 132.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:39,472 INFO L168 Benchmark]: TraceAbstraction took 3727.90 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 131.8 MB in the beginning and 179.5 MB in the end (delta: -47.7 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:39,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.72 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.5 MB in the beginning and 157.5 MB in the end (delta: -59.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.48 ms. Allocated memory is still 200.8 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.88 ms. Allocated memory is still 200.8 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.40 ms. Allocated memory is still 200.8 MB. Free memory was 154.1 MB in the beginning and 132.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3727.90 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 131.8 MB in the beginning and 179.5 MB in the end (delta: -47.7 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 171 SDtfs, 114 SDslu, 174 SDs, 0 SdLazy, 120 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 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, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 3519 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...