/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 00:11:10,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 00:11:10,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 00:11:10,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 00:11:10,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 00:11:10,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 00:11:10,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 00:11:10,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 00:11:10,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 00:11:10,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 00:11:10,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 00:11:10,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 00:11:10,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 00:11:10,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 00:11:10,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 00:11:10,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 00:11:10,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 00:11:10,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 00:11:10,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 00:11:10,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 00:11:10,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 00:11:10,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 00:11:10,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 00:11:10,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 00:11:10,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 00:11:10,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 00:11:10,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 00:11:10,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 00:11:10,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 00:11:10,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 00:11:10,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 00:11:10,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 00:11:10,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 00:11:10,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 00:11:10,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 00:11:10,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 00:11:10,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 00:11:10,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 00:11:10,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 00:11:10,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 00:11:10,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 00:11:10,340 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 00:11:10,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 00:11:10,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 00:11:10,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 00:11:10,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 00:11:10,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 00:11:10,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 00:11:10,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 00:11:10,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 00:11:10,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 00:11:10,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 00:11:10,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 00:11:10,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 00:11:10,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 00:11:10,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 00:11:10,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 00:11:10,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 00:11:10,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:11:10,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 00:11:10,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 00:11:10,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 00:11:10,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 00:11:10,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 00:11:10,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 00:11:10,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 00:11:10,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 00:11:10,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 00:11:10,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 00:11:10,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 00:11:10,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 00:11:10,807 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 00:11:10,808 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-09-17 00:11:10,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039d66ba3/76f3023ba41a4208bc97cfbc5ab2729a/FLAG42d6f141a [2020-09-17 00:11:11,534 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 00:11:11,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-09-17 00:11:11,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039d66ba3/76f3023ba41a4208bc97cfbc5ab2729a/FLAG42d6f141a [2020-09-17 00:11:11,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039d66ba3/76f3023ba41a4208bc97cfbc5ab2729a [2020-09-17 00:11:11,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 00:11:11,806 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 00:11:11,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 00:11:11,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 00:11:11,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 00:11:11,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:11:11" (1/1) ... [2020-09-17 00:11:11,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd2411b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:11, skipping insertion in model container [2020-09-17 00:11:11,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:11:11" (1/1) ... [2020-09-17 00:11:11,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 00:11:11,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 00:11:12,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:11:12,530 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 00:11:12,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:11:12,656 INFO L208 MainTranslator]: Completed translation [2020-09-17 00:11:12,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12 WrapperNode [2020-09-17 00:11:12,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 00:11:12,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 00:11:12,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 00:11:12,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 00:11:12,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (1/1) ... [2020-09-17 00:11:12,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (1/1) ... [2020-09-17 00:11:12,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 00:11:12,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 00:11:12,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 00:11:12,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 00:11:12,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (1/1) ... [2020-09-17 00:11:12,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (1/1) ... [2020-09-17 00:11:12,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (1/1) ... [2020-09-17 00:11:12,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (1/1) ... [2020-09-17 00:11:12,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (1/1) ... [2020-09-17 00:11:12,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (1/1) ... [2020-09-17 00:11:12,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (1/1) ... [2020-09-17 00:11:12,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 00:11:12,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 00:11:12,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 00:11:12,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 00:11:12,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (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 [2020-09-17 00:11:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 00:11:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 00:11:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 00:11:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 00:11:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 00:11:12,848 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 00:11:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 00:11:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 00:11:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 00:11:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 00:11:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 00:11:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 00:11:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 00:11:12,852 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 00:11:13,267 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 00:11:13,268 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 00:11:13,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:11:13 BoogieIcfgContainer [2020-09-17 00:11:13,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 00:11:13,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 00:11:13,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 00:11:13,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 00:11:13,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 12:11:11" (1/3) ... [2020-09-17 00:11:13,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9f7c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:11:13, skipping insertion in model container [2020-09-17 00:11:13,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:11:12" (2/3) ... [2020-09-17 00:11:13,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9f7c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:11:13, skipping insertion in model container [2020-09-17 00:11:13,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:11:13" (3/3) ... [2020-09-17 00:11:13,284 INFO L109 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2020-09-17 00:11:13,296 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 00:11:13,297 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 00:11:13,307 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 00:11:13,308 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 00:11:13,337 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,337 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,337 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,338 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,339 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,341 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,341 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,341 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,342 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,360 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,364 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:11:13,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 00:11:13,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 00:11:13,439 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 00:11:13,439 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 00:11:13,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 00:11:13,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 00:11:13,440 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 00:11:13,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 00:11:13,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 00:11:13,471 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-17 00:11:13,474 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-17 00:11:13,553 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-17 00:11:13,554 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:11:13,562 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 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-17 00:11:13,567 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-17 00:11:13,619 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-17 00:11:13,619 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:11:13,620 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 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-17 00:11:13,624 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-17 00:11:13,625 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 00:11:15,321 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1996 [2020-09-17 00:11:15,322 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-17 00:11:15,327 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-17 00:11:15,351 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-09-17 00:11:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-09-17 00:11:15,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 00:11:15,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:11:15,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:11:15,365 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:11:15,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:11:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 1 times [2020-09-17 00:11:15,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:11:15,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865281545] [2020-09-17 00:11:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:11:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:11:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:11:15,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865281545] [2020-09-17 00:11:15,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:11:15,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 00:11:15,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148677601] [2020-09-17 00:11:15,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:11:15,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:11:15,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:11:15,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:11:15,672 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-09-17 00:11:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:11:15,734 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-09-17 00:11:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:11:15,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-17 00:11:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:11:15,766 INFO L225 Difference]: With dead ends: 214 [2020-09-17 00:11:15,767 INFO L226 Difference]: Without dead ends: 166 [2020-09-17 00:11:15,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:11:15,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-17 00:11:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-17 00:11:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-17 00:11:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-09-17 00:11:15,871 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-09-17 00:11:15,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:11:15,873 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-09-17 00:11:15,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:11:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-09-17 00:11:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 00:11:15,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:11:15,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:11:15,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 00:11:15,885 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:11:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:11:15,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1395710546, now seen corresponding path program 1 times [2020-09-17 00:11:15,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:11:15,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871258407] [2020-09-17 00:11:15,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:11:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:11:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:11:15,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871258407] [2020-09-17 00:11:15,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:11:15,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:11:15,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853843502] [2020-09-17 00:11:15,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:11:15,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:11:15,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:11:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:11:15,982 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-09-17 00:11:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:11:16,011 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-09-17 00:11:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 00:11:16,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-17 00:11:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:11:16,014 INFO L225 Difference]: With dead ends: 202 [2020-09-17 00:11:16,014 INFO L226 Difference]: Without dead ends: 130 [2020-09-17 00:11:16,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:11:16,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-17 00:11:16,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-09-17 00:11:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-17 00:11:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-09-17 00:11:16,027 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-09-17 00:11:16,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:11:16,027 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-09-17 00:11:16,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:11:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-09-17 00:11:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 00:11:16,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:11:16,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:11:16,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 00:11:16,029 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:11:16,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:11:16,030 INFO L82 PathProgramCache]: Analyzing trace with hash -316797667, now seen corresponding path program 1 times [2020-09-17 00:11:16,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:11:16,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066185168] [2020-09-17 00:11:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:11:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:11:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:11:16,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066185168] [2020-09-17 00:11:16,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:11:16,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 00:11:16,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240208639] [2020-09-17 00:11:16,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:11:16,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:11:16,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:11:16,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:11:16,128 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 3 states. [2020-09-17 00:11:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:11:16,140 INFO L93 Difference]: Finished difference Result 124 states and 303 transitions. [2020-09-17 00:11:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:11:16,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-17 00:11:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:11:16,144 INFO L225 Difference]: With dead ends: 124 [2020-09-17 00:11:16,144 INFO L226 Difference]: Without dead ends: 124 [2020-09-17 00:11:16,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:11:16,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-17 00:11:16,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-09-17 00:11:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-17 00:11:16,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-09-17 00:11:16,155 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 10 [2020-09-17 00:11:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:11:16,156 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-09-17 00:11:16,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:11:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-09-17 00:11:16,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 00:11:16,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:11:16,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:11:16,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 00:11:16,158 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:11:16,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:11:16,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1215717328, now seen corresponding path program 1 times [2020-09-17 00:11:16,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:11:16,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745706669] [2020-09-17 00:11:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:11:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:11:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:11:16,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745706669] [2020-09-17 00:11:16,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:11:16,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:11:16,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555865541] [2020-09-17 00:11:16,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:11:16,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:11:16,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:11:16,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:11:16,246 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 4 states. [2020-09-17 00:11:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:11:16,265 INFO L93 Difference]: Finished difference Result 142 states and 336 transitions. [2020-09-17 00:11:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 00:11:16,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 00:11:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:11:16,267 INFO L225 Difference]: With dead ends: 142 [2020-09-17 00:11:16,267 INFO L226 Difference]: Without dead ends: 64 [2020-09-17 00:11:16,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:11:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-17 00:11:16,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-09-17 00:11:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-17 00:11:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-09-17 00:11:16,273 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-09-17 00:11:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:11:16,273 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-09-17 00:11:16,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:11:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-09-17 00:11:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 00:11:16,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:11:16,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:11:16,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 00:11:16,275 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:11:16,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:11:16,275 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 1 times [2020-09-17 00:11:16,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:11:16,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591247431] [2020-09-17 00:11:16,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:11:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:11:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:11:16,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591247431] [2020-09-17 00:11:16,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:11:16,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:11:16,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297361448] [2020-09-17 00:11:16,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:11:16,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:11:16,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:11:16,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:11:16,370 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand 4 states. [2020-09-17 00:11:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:11:16,403 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-09-17 00:11:16,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:11:16,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 00:11:16,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:11:16,406 INFO L225 Difference]: With dead ends: 77 [2020-09-17 00:11:16,406 INFO L226 Difference]: Without dead ends: 56 [2020-09-17 00:11:16,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:11:16,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-17 00:11:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-17 00:11:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-17 00:11:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-09-17 00:11:16,411 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-09-17 00:11:16,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:11:16,412 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-09-17 00:11:16,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:11:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-09-17 00:11:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 00:11:16,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:11:16,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:11:16,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 00:11:16,414 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:11:16,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:11:16,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 1 times [2020-09-17 00:11:16,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:11:16,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701087785] [2020-09-17 00:11:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:11:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:11:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:11:16,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701087785] [2020-09-17 00:11:16,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:11:16,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:11:16,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478133669] [2020-09-17 00:11:16,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:11:16,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:11:16,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:11:16,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:11:16,526 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand 5 states. [2020-09-17 00:11:16,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:11:16,584 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-09-17 00:11:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:11:16,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 00:11:16,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:11:16,590 INFO L225 Difference]: With dead ends: 57 [2020-09-17 00:11:16,590 INFO L226 Difference]: Without dead ends: 42 [2020-09-17 00:11:16,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:11:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-17 00:11:16,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-17 00:11:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-17 00:11:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-09-17 00:11:16,594 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-09-17 00:11:16,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:11:16,595 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-09-17 00:11:16,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:11:16,595 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-09-17 00:11:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:11:16,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:11:16,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:11:16,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 00:11:16,596 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:11:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:11:16,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 1 times [2020-09-17 00:11:16,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:11:16,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735670474] [2020-09-17 00:11:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:11:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:11:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:11:16,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735670474] [2020-09-17 00:11:16,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:11:16,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:11:16,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015092171] [2020-09-17 00:11:16,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 00:11:16,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:11:16,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 00:11:16,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:11:16,678 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 6 states. [2020-09-17 00:11:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:11:16,748 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-09-17 00:11:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 00:11:16,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-17 00:11:16,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:11:16,749 INFO L225 Difference]: With dead ends: 39 [2020-09-17 00:11:16,750 INFO L226 Difference]: Without dead ends: 33 [2020-09-17 00:11:16,750 INFO L675 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 [2020-09-17 00:11:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-17 00:11:16,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-17 00:11:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-17 00:11:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-09-17 00:11:16,753 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-09-17 00:11:16,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:11:16,754 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-09-17 00:11:16,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 00:11:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-09-17 00:11:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-17 00:11:16,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:11:16,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:11:16,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 00:11:16,755 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:11:16,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:11:16,756 INFO L82 PathProgramCache]: Analyzing trace with hash -958438309, now seen corresponding path program 1 times [2020-09-17 00:11:16,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:11:16,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576710209] [2020-09-17 00:11:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:11:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:11:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:11:16,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576710209] [2020-09-17 00:11:16,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:11:16,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:11:16,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524491040] [2020-09-17 00:11:16,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:11:16,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:11:16,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:11:16,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:11:16,837 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-09-17 00:11:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:11:16,855 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-09-17 00:11:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 00:11:16,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-09-17 00:11:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:11:16,856 INFO L225 Difference]: With dead ends: 32 [2020-09-17 00:11:16,856 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 00:11:16,856 INFO L675 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 [2020-09-17 00:11:16,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 00:11:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 00:11:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 00:11:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 00:11:16,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-17 00:11:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:11:16,859 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 00:11:16,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:11:16,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 00:11:16,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 00:11:16,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 00:11:16,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 12:11:16 BasicIcfg [2020-09-17 00:11:16,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 00:11:16,879 INFO L168 Benchmark]: Toolchain (without parser) took 5073.51 ms. Allocated memory was 138.9 MB in the beginning and 251.1 MB in the end (delta: 112.2 MB). Free memory was 101.1 MB in the beginning and 183.2 MB in the end (delta: -82.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2020-09-17 00:11:16,880 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-17 00:11:16,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 850.43 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 160.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-17 00:11:16,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.60 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-17 00:11:16,884 INFO L168 Benchmark]: Boogie Preprocessor took 50.47 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-17 00:11:16,887 INFO L168 Benchmark]: RCFGBuilder took 500.63 ms. Allocated memory is still 203.4 MB. Free memory was 157.0 MB in the beginning and 134.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-17 00:11:16,888 INFO L168 Benchmark]: TraceAbstraction took 3597.40 ms. Allocated memory was 203.4 MB in the beginning and 251.1 MB in the end (delta: 47.7 MB). Free memory was 134.5 MB in the beginning and 183.2 MB in the end (delta: -48.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-17 00:11:16,898 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 850.43 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 160.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.60 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.47 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.63 ms. Allocated memory is still 203.4 MB. Free memory was 157.0 MB in the beginning and 134.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3597.40 ms. Allocated memory was 203.4 MB in the beginning and 251.1 MB in the end (delta: 47.7 MB). Free memory was 134.5 MB in the beginning and 183.2 MB in the end (delta: -48.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 630 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1996 CheckedPairsTotal, 58 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: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 125 SDtfs, 114 SDslu, 139 SDs, 0 SdLazy, 101 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 3147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...