/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:20:56,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:20:56,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:20:56,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:20:56,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:20:56,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:20:56,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:20:56,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:20:56,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:20:56,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:20:56,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:20:56,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:20:56,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:20:56,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:20:56,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:20:56,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:20:56,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:20:56,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:20:56,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:20:56,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:20:56,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:20:56,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:20:56,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:20:56,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:20:56,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:20:56,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:20:56,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:20:56,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:20:56,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:20:56,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:20:56,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:20:56,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:20:56,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:20:56,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:20:56,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:20:56,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:20:56,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:20:56,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:20:56,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:20:56,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:20:56,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:20:56,072 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-VariableLbe.epf [2020-04-18 02:20:56,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:20:56,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:20:56,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:20:56,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:20:56,088 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:20:56,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:20:56,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:20:56,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:20:56,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:20:56,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:20:56,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:20:56,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:20:56,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:20:56,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:20:56,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:20:56,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:20:56,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:20:56,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:20:56,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:20:56,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:20:56,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:20:56,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:20:56,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:20:56,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:20:56,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:20:56,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:20:56,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:20:56,093 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:20:56,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:20:56,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:20:56,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:20:56,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:20:56,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:20:56,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:20:56,435 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:20:56,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-04-18 02:20:56,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef5b2fa9/815f0a71a52745d396725e26d33828df/FLAGa2097b975 [2020-04-18 02:20:57,040 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:20:57,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-04-18 02:20:57,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef5b2fa9/815f0a71a52745d396725e26d33828df/FLAGa2097b975 [2020-04-18 02:20:57,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef5b2fa9/815f0a71a52745d396725e26d33828df [2020-04-18 02:20:57,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:20:57,375 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:20:57,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:20:57,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:20:57,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:20:57,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:20:57" (1/1) ... [2020-04-18 02:20:57,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c599cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:57, skipping insertion in model container [2020-04-18 02:20:57,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:20:57" (1/1) ... [2020-04-18 02:20:57,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:20:57,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:20:57,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:20:57,985 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:20:58,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:20:58,113 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:20:58,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58 WrapperNode [2020-04-18 02:20:58,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:20:58,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:20:58,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:20:58,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:20:58,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (1/1) ... [2020-04-18 02:20:58,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (1/1) ... [2020-04-18 02:20:58,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:20:58,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:20:58,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:20:58,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:20:58,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (1/1) ... [2020-04-18 02:20:58,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (1/1) ... [2020-04-18 02:20:58,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (1/1) ... [2020-04-18 02:20:58,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (1/1) ... [2020-04-18 02:20:58,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (1/1) ... [2020-04-18 02:20:58,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (1/1) ... [2020-04-18 02:20:58,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (1/1) ... [2020-04-18 02:20:58,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:20:58,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:20:58,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:20:58,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:20:58,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (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 [2020-04-18 02:20:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:20:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:20:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:20:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:20:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:20:58,301 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:20:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:20:58,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:20:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:20:58,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:20:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:20:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:20:58,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:20:58,305 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:20:58,719 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:20:58,720 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:20:58,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:20:58 BoogieIcfgContainer [2020-04-18 02:20:58,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:20:58,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:20:58,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:20:58,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:20:58,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:20:57" (1/3) ... [2020-04-18 02:20:58,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f3641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:20:58, skipping insertion in model container [2020-04-18 02:20:58,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:58" (2/3) ... [2020-04-18 02:20:58,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f3641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:20:58, skipping insertion in model container [2020-04-18 02:20:58,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:20:58" (3/3) ... [2020-04-18 02:20:58,733 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-04-18 02:20:58,743 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:20:58,744 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:20:58,751 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:20:58,752 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:20:58,783 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,783 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,783 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,784 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,785 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,785 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,786 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,786 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,787 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,787 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,788 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,788 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,789 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,789 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,789 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,790 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,791 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,791 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,797 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,797 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,798 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,798 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,805 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,806 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,806 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,806 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,814 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,814 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,814 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,814 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:58,835 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:20:58,850 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:20:58,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:20:58,851 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:20:58,851 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:20:58,851 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:20:58,851 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:20:58,851 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:20:58,851 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:20:58,866 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:20:58,868 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:20:58,916 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:20:58,917 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:20:58,924 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:20:58,927 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:20:58,959 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:20:58,960 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:20:58,960 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:20:58,965 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:20:58,966 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:21:00,565 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:21:00,623 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-04-18 02:21:00,623 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:21:00,627 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 02:21:00,652 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:21:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:21:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:21:00,662 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:00,663 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:00,663 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:00,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-04-18 02:21:00,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:00,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162865388] [2020-04-18 02:21:00,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:21:00,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162865388] [2020-04-18 02:21:00,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:00,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:21:00,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919861814] [2020-04-18 02:21:00,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:21:00,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:00,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:21:00,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:21:00,911 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:21:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:00,982 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:21:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:21:00,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:21:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:01,006 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:21:01,006 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:21:01,008 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 [2020-04-18 02:21:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:21:01,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:21:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:21:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:21:01,073 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:21:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:01,075 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:21:01,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:21:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:21:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:21:01,076 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:01,076 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:01,077 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:01,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 1 times [2020-04-18 02:21:01,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:01,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950710454] [2020-04-18 02:21:01,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:21:01,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950710454] [2020-04-18 02:21:01,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:01,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:21:01,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242305945] [2020-04-18 02:21:01,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:21:01,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:01,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:21:01,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:21:01,155 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-04-18 02:21:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:01,167 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-04-18 02:21:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:21:01,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 02:21:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:01,170 INFO L225 Difference]: With dead ends: 214 [2020-04-18 02:21:01,171 INFO L226 Difference]: Without dead ends: 214 [2020-04-18 02:21:01,172 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 [2020-04-18 02:21:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-04-18 02:21:01,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-04-18 02:21:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-04-18 02:21:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-04-18 02:21:01,196 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-04-18 02:21:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:01,196 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-04-18 02:21:01,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:21:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-04-18 02:21:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:21:01,198 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:01,198 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:01,199 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:01,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:01,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 1 times [2020-04-18 02:21:01,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:01,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951976955] [2020-04-18 02:21:01,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:21:01,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951976955] [2020-04-18 02:21:01,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:01,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:01,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116123126] [2020-04-18 02:21:01,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:01,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:01,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:01,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:01,298 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 4 states. [2020-04-18 02:21:01,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:01,332 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-04-18 02:21:01,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:21:01,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:21:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:01,335 INFO L225 Difference]: With dead ends: 240 [2020-04-18 02:21:01,335 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 02:21:01,335 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 [2020-04-18 02:21:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 02:21:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 02:21:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 02:21:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 02:21:01,349 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-04-18 02:21:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:01,350 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 02:21:01,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 02:21:01,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:21:01,351 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:01,351 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:01,352 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:01,352 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-04-18 02:21:01,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:01,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314782827] [2020-04-18 02:21:01,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:21:01,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314782827] [2020-04-18 02:21:01,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:01,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:01,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645318400] [2020-04-18 02:21:01,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:01,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:01,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:01,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:01,458 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-18 02:21:01,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:01,498 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 02:21:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:21:01,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:21:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:01,502 INFO L225 Difference]: With dead ends: 164 [2020-04-18 02:21:01,502 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 02:21:01,503 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 [2020-04-18 02:21:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 02:21:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 02:21:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 02:21:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 02:21:01,516 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 02:21:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:01,517 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 02:21:01,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 02:21:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:21:01,520 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:01,520 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:01,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:01,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:01,520 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 1 times [2020-04-18 02:21:01,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:01,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795282949] [2020-04-18 02:21:01,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:21:01,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795282949] [2020-04-18 02:21:01,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:01,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:21:01,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155505135] [2020-04-18 02:21:01,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:21:01,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:01,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:21:01,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:21:01,635 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-18 02:21:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:01,701 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 02:21:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:21:01,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:21:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:01,704 INFO L225 Difference]: With dead ends: 122 [2020-04-18 02:21:01,704 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:21:01,704 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 [2020-04-18 02:21:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:21:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:21:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:21:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 02:21:01,710 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 02:21:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:01,710 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 02:21:01,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:21:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 02:21:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:21:01,712 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:01,712 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:01,712 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-04-18 02:21:01,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:01,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198991504] [2020-04-18 02:21:01,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:21:01,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198991504] [2020-04-18 02:21:01,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:01,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:01,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840895200] [2020-04-18 02:21:01,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:21:01,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:01,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:21:01,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:21:01,747 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-18 02:21:01,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:01,754 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 02:21:01,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:21:01,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:21:01,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:01,756 INFO L225 Difference]: With dead ends: 115 [2020-04-18 02:21:01,756 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 02:21:01,757 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 [2020-04-18 02:21:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 02:21:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 02:21:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 02:21:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 02:21:01,761 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 02:21:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:01,762 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 02:21:01,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:21:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 02:21:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:21:01,763 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:01,763 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:01,763 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:01,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-04-18 02:21:01,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:01,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883337015] [2020-04-18 02:21:01,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:21:01,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883337015] [2020-04-18 02:21:01,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:01,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:21:01,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616138602] [2020-04-18 02:21:01,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:21:01,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:01,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:21:01,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:21:01,842 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-04-18 02:21:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:01,903 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-04-18 02:21:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:21:01,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:21:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:01,905 INFO L225 Difference]: With dead ends: 92 [2020-04-18 02:21:01,905 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:21:01,905 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 [2020-04-18 02:21:01,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:21:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:21:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:21:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 02:21:01,908 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 02:21:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:01,908 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 02:21:01,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:21:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 02:21:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:21:01,909 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:01,909 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:01,909 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:01,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:01,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-04-18 02:21:01,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:01,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593141397] [2020-04-18 02:21:01,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:21:01,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593141397] [2020-04-18 02:21:01,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:01,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:21:01,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332204472] [2020-04-18 02:21:01,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:01,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:01,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:01,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:01,946 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-18 02:21:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:01,956 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 02:21:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:21:01,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:21:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:01,957 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:21:01,957 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:21:01,958 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 [2020-04-18 02:21:01,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:21:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:21:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:21:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:21:01,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:21:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:01,959 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:21:01,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:21:01,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:21:01,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:21:01 BasicIcfg [2020-04-18 02:21:01,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:21:01,966 INFO L168 Benchmark]: Toolchain (without parser) took 4613.79 ms. Allocated memory was 148.4 MB in the beginning and 244.3 MB in the end (delta: 95.9 MB). Free memory was 105.1 MB in the beginning and 159.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:01,966 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:21:01,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.29 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 103.3 MB in the beginning and 161.1 MB in the end (delta: -57.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:01,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.18 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 158.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:01,969 INFO L168 Benchmark]: Boogie Preprocessor took 53.62 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 157.3 MB in the end (delta: 914.8 kB). Peak memory consumption was 914.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:21:01,970 INFO L168 Benchmark]: RCFGBuilder took 505.22 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 135.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:01,971 INFO L168 Benchmark]: TraceAbstraction took 3237.69 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 134.7 MB in the beginning and 159.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:01,975 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.29 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 103.3 MB in the beginning and 161.1 MB in the end (delta: -57.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.18 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 158.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.62 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 157.3 MB in the end (delta: 914.8 kB). Peak memory consumption was 914.8 kB. Max. memory is 7.1 GB. * RCFGBuilder took 505.22 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 135.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3237.69 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 134.7 MB in the beginning and 159.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 650 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2190 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 145 SDtfs, 140 SDslu, 175 SDs, 0 SdLazy, 91 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2996 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...