/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/safe019_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:29:32,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:29:32,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:29:32,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:29:32,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:29:32,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:29:32,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:29:32,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:29:32,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:29:32,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:29:32,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:29:32,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:29:32,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:29:32,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:29:32,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:29:32,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:29:32,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:29:32,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:29:32,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:29:32,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:29:32,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:29:32,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:29:32,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:29:32,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:29:32,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 15:29:32,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:29:32,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:29:32,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:29:32,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:29:32,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:29:32,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:29:32,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:29:32,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:29:32,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:29:32,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:29:32,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:29:32,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:29:32,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:29:32,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:29:32,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:29:32,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:29:32,816 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:29:32,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:29:32,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:29:32,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:29:32,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:29:32,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:29:32,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:29:32,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:29:32,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:29:32,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:29:32,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:29:32,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:29:32,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:29:32,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:29:32,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:29:32,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:29:32,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:29:32,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:29:32,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:29:32,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:29:32,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:29:32,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:29:32,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:29:32,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:29:32,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:29:32,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:29:33,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:29:33,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:29:33,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:29:33,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:29:33,324 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:29:33,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-09-11 15:29:33,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9d00c8bb/b4ea11a7838841ce897026977456aabe/FLAG358ba6a8a [2020-09-11 15:29:34,085 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:29:34,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-09-11 15:29:34,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9d00c8bb/b4ea11a7838841ce897026977456aabe/FLAG358ba6a8a [2020-09-11 15:29:34,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9d00c8bb/b4ea11a7838841ce897026977456aabe [2020-09-11 15:29:34,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:29:34,352 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:29:34,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:29:34,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:29:34,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:29:34,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:29:34" (1/1) ... [2020-09-11 15:29:34,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271ca577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:34, skipping insertion in model container [2020-09-11 15:29:34,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:29:34" (1/1) ... [2020-09-11 15:29:34,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:29:34,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:29:35,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:29:35,030 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:29:35,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:29:35,185 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:29:35,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35 WrapperNode [2020-09-11 15:29:35,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:29:35,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:29:35,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:29:35,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:29:35,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... [2020-09-11 15:29:35,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... [2020-09-11 15:29:35,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:29:35,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:29:35,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:29:35,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:29:35,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... [2020-09-11 15:29:35,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... [2020-09-11 15:29:35,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... [2020-09-11 15:29:35,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... [2020-09-11 15:29:35,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... [2020-09-11 15:29:35,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... [2020-09-11 15:29:35,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... [2020-09-11 15:29:35,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:29:35,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:29:35,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:29:35,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:29:35,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 15:29:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:29:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:29:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:29:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:29:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:29:35,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:29:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:29:35,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:29:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:29:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:29:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-11 15:29:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-11 15:29:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:29:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:29:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:29:35,365 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:29:35,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:29:35,786 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:29:35,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:29:35 BoogieIcfgContainer [2020-09-11 15:29:35,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:29:35,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:29:35,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:29:35,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:29:35,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:29:34" (1/3) ... [2020-09-11 15:29:35,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e870dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:29:35, skipping insertion in model container [2020-09-11 15:29:35,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:29:35" (2/3) ... [2020-09-11 15:29:35,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e870dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:29:35, skipping insertion in model container [2020-09-11 15:29:35,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:29:35" (3/3) ... [2020-09-11 15:29:35,802 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2020-09-11 15:29:35,814 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:29:35,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:29:35,826 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:29:35,827 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:29:35,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,861 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,867 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,867 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,867 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,867 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,868 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,868 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,872 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,873 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,873 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,873 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,884 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,885 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,885 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,887 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,888 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,890 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,891 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:29:35,916 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 15:29:35,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:29:35,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:29:35,943 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:29:35,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:29:35,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:29:35,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:29:35,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:29:35,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:29:35,960 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-09-11 15:29:35,963 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-11 15:29:36,021 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-11 15:29:36,022 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:29:36,028 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 15:29:36,032 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-11 15:29:36,069 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-11 15:29:36,070 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:29:36,071 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 15:29:36,073 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-11 15:29:36,075 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:29:37,902 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-09-11 15:29:38,178 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-09-11 15:29:38,178 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-09-11 15:29:38,184 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-09-11 15:29:38,233 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-09-11 15:29:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-09-11 15:29:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:29:38,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:38,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:38,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:38,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-09-11 15:29:38,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:38,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737279251] [2020-09-11 15:29:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:38,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737279251] [2020-09-11 15:29:38,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:38,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:29:38,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392818388] [2020-09-11 15:29:38,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:29:38,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:38,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:29:38,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:29:38,572 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-09-11 15:29:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:38,665 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-09-11 15:29:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:29:38,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 15:29:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:38,694 INFO L225 Difference]: With dead ends: 670 [2020-09-11 15:29:38,694 INFO L226 Difference]: Without dead ends: 526 [2020-09-11 15:29:38,696 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 [2020-09-11 15:29:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-09-11 15:29:38,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-09-11 15:29:38,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-09-11 15:29:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-09-11 15:29:38,803 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-09-11 15:29:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:38,804 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-09-11 15:29:38,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:29:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-09-11 15:29:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:29:38,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:38,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:38,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:29:38,808 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:38,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-09-11 15:29:38,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:38,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303359801] [2020-09-11 15:29:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:38,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303359801] [2020-09-11 15:29:38,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:38,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:38,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156219694] [2020-09-11 15:29:38,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:38,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:38,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:38,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:38,933 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-09-11 15:29:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:38,991 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-09-11 15:29:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:29:38,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:29:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:38,999 INFO L225 Difference]: With dead ends: 682 [2020-09-11 15:29:38,999 INFO L226 Difference]: Without dead ends: 394 [2020-09-11 15:29:39,000 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 [2020-09-11 15:29:39,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-11 15:29:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-09-11 15:29:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-11 15:29:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-09-11 15:29:39,039 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-09-11 15:29:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:39,040 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-09-11 15:29:39,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-09-11 15:29:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:29:39,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:39,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:39,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:29:39,043 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:39,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:39,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-09-11 15:29:39,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:39,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29043696] [2020-09-11 15:29:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:39,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29043696] [2020-09-11 15:29:39,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:39,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:29:39,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025484667] [2020-09-11 15:29:39,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:29:39,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:39,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:29:39,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:29:39,140 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-09-11 15:29:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:39,154 INFO L93 Difference]: Finished difference Result 386 states and 1190 transitions. [2020-09-11 15:29:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:29:39,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 15:29:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:39,158 INFO L225 Difference]: With dead ends: 386 [2020-09-11 15:29:39,158 INFO L226 Difference]: Without dead ends: 386 [2020-09-11 15:29:39,158 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 [2020-09-11 15:29:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-09-11 15:29:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-09-11 15:29:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-11 15:29:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1190 transitions. [2020-09-11 15:29:39,175 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1190 transitions. Word has length 12 [2020-09-11 15:29:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:39,176 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 1190 transitions. [2020-09-11 15:29:39,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:29:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1190 transitions. [2020-09-11 15:29:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:29:39,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:39,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:39,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:29:39,179 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:39,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:39,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1071238165, now seen corresponding path program 1 times [2020-09-11 15:29:39,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:39,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428353935] [2020-09-11 15:29:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:39,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428353935] [2020-09-11 15:29:39,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:39,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:39,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595239001] [2020-09-11 15:29:39,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:29:39,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:39,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:29:39,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:29:39,260 INFO L87 Difference]: Start difference. First operand 386 states and 1190 transitions. Second operand 3 states. [2020-09-11 15:29:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:39,294 INFO L93 Difference]: Finished difference Result 466 states and 1378 transitions. [2020-09-11 15:29:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:29:39,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-11 15:29:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:39,298 INFO L225 Difference]: With dead ends: 466 [2020-09-11 15:29:39,299 INFO L226 Difference]: Without dead ends: 402 [2020-09-11 15:29:39,300 INFO L675 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 [2020-09-11 15:29:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-09-11 15:29:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 370. [2020-09-11 15:29:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-09-11 15:29:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1098 transitions. [2020-09-11 15:29:39,314 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1098 transitions. Word has length 13 [2020-09-11 15:29:39,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:39,314 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 1098 transitions. [2020-09-11 15:29:39,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:29:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1098 transitions. [2020-09-11 15:29:39,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:29:39,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:39,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:39,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:29:39,320 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:39,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:39,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1070883463, now seen corresponding path program 1 times [2020-09-11 15:29:39,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:39,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163152263] [2020-09-11 15:29:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:39,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163152263] [2020-09-11 15:29:39,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:39,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:29:39,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955025020] [2020-09-11 15:29:39,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:29:39,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:39,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:29:39,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:29:39,456 INFO L87 Difference]: Start difference. First operand 370 states and 1098 transitions. Second operand 3 states. [2020-09-11 15:29:39,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:39,468 INFO L93 Difference]: Finished difference Result 358 states and 1054 transitions. [2020-09-11 15:29:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:29:39,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-11 15:29:39,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:39,472 INFO L225 Difference]: With dead ends: 358 [2020-09-11 15:29:39,472 INFO L226 Difference]: Without dead ends: 358 [2020-09-11 15:29:39,473 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 [2020-09-11 15:29:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-11 15:29:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-09-11 15:29:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-09-11 15:29:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1054 transitions. [2020-09-11 15:29:39,485 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1054 transitions. Word has length 13 [2020-09-11 15:29:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:39,485 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1054 transitions. [2020-09-11 15:29:39,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:29:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1054 transitions. [2020-09-11 15:29:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:29:39,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:39,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:39,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:29:39,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:39,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:39,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1189218785, now seen corresponding path program 1 times [2020-09-11 15:29:39,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:39,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364392915] [2020-09-11 15:29:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:39,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364392915] [2020-09-11 15:29:39,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:39,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:39,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784761538] [2020-09-11 15:29:39,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:39,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:39,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:39,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:39,589 INFO L87 Difference]: Start difference. First operand 358 states and 1054 transitions. Second operand 4 states. [2020-09-11 15:29:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:39,652 INFO L93 Difference]: Finished difference Result 514 states and 1482 transitions. [2020-09-11 15:29:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:29:39,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:29:39,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:39,655 INFO L225 Difference]: With dead ends: 514 [2020-09-11 15:29:39,655 INFO L226 Difference]: Without dead ends: 274 [2020-09-11 15:29:39,656 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 [2020-09-11 15:29:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-11 15:29:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-09-11 15:29:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-11 15:29:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-09-11 15:29:39,665 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 14 [2020-09-11 15:29:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:39,666 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-09-11 15:29:39,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-09-11 15:29:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:29:39,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:39,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:39,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:29:39,668 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:39,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:39,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 2 times [2020-09-11 15:29:39,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:39,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112839202] [2020-09-11 15:29:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:39,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112839202] [2020-09-11 15:29:39,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:39,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:29:39,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693046924] [2020-09-11 15:29:39,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:39,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:39,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:39,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:39,814 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-09-11 15:29:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:39,858 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-09-11 15:29:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:29:39,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:29:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:39,861 INFO L225 Difference]: With dead ends: 345 [2020-09-11 15:29:39,861 INFO L226 Difference]: Without dead ends: 252 [2020-09-11 15:29:39,861 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 [2020-09-11 15:29:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-11 15:29:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-09-11 15:29:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-11 15:29:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-09-11 15:29:39,870 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-09-11 15:29:39,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:39,871 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-09-11 15:29:39,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-09-11 15:29:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:29:39,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:39,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:39,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:29:39,872 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:39,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:39,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-09-11 15:29:39,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:39,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863248690] [2020-09-11 15:29:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:39,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863248690] [2020-09-11 15:29:39,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:39,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:29:39,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465597334] [2020-09-11 15:29:39,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:29:39,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:39,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:29:39,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:29:39,961 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-09-11 15:29:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:40,013 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-09-11 15:29:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:29:40,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 15:29:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:40,016 INFO L225 Difference]: With dead ends: 278 [2020-09-11 15:29:40,016 INFO L226 Difference]: Without dead ends: 203 [2020-09-11 15:29:40,016 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 [2020-09-11 15:29:40,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-11 15:29:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-09-11 15:29:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-11 15:29:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-09-11 15:29:40,023 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-09-11 15:29:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:40,024 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-09-11 15:29:40,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:29:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-09-11 15:29:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 15:29:40,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:40,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:40,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:29:40,025 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:40,026 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-09-11 15:29:40,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:40,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580252778] [2020-09-11 15:29:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:40,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580252778] [2020-09-11 15:29:40,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:40,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:29:40,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719337510] [2020-09-11 15:29:40,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:29:40,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:40,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:29:40,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:29:40,143 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-09-11 15:29:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:40,226 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-09-11 15:29:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:29:40,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-11 15:29:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:40,228 INFO L225 Difference]: With dead ends: 200 [2020-09-11 15:29:40,228 INFO L226 Difference]: Without dead ends: 162 [2020-09-11 15:29:40,229 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 [2020-09-11 15:29:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-11 15:29:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-11 15:29:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-11 15:29:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-09-11 15:29:40,235 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-09-11 15:29:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:40,235 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-09-11 15:29:40,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:29:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-09-11 15:29:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:29:40,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:40,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:40,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:29:40,237 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:40,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1305224855, now seen corresponding path program 1 times [2020-09-11 15:29:40,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:40,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743619013] [2020-09-11 15:29:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:40,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743619013] [2020-09-11 15:29:40,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:40,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:29:40,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882117740] [2020-09-11 15:29:40,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:40,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:40,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:40,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:40,307 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 4 states. [2020-09-11 15:29:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:40,327 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-09-11 15:29:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:29:40,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-11 15:29:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:40,329 INFO L225 Difference]: With dead ends: 194 [2020-09-11 15:29:40,329 INFO L226 Difference]: Without dead ends: 127 [2020-09-11 15:29:40,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:29:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-11 15:29:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-09-11 15:29:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-11 15:29:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-09-11 15:29:40,334 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-09-11 15:29:40,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:40,336 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-09-11 15:29:40,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-09-11 15:29:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:29:40,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:40,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:40,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:29:40,337 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:40,338 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 2 times [2020-09-11 15:29:40,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:40,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289048559] [2020-09-11 15:29:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:40,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289048559] [2020-09-11 15:29:40,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:40,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:29:40,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792043293] [2020-09-11 15:29:40,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:29:40,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:40,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:29:40,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:29:40,469 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-09-11 15:29:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:40,546 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-09-11 15:29:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-11 15:29:40,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-11 15:29:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:40,549 INFO L225 Difference]: With dead ends: 120 [2020-09-11 15:29:40,549 INFO L226 Difference]: Without dead ends: 71 [2020-09-11 15:29:40,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 15:29:40,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-11 15:29:40,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-09-11 15:29:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-11 15:29:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-09-11 15:29:40,552 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-09-11 15:29:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:40,553 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-09-11 15:29:40,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:29:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-09-11 15:29:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-11 15:29:40,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:29:40,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:29:40,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 15:29:40,555 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:29:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:29:40,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-09-11 15:29:40,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:29:40,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497648520] [2020-09-11 15:29:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:29:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:29:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:29:40,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497648520] [2020-09-11 15:29:40,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:29:40,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:29:40,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398430889] [2020-09-11 15:29:40,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:29:40,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:29:40,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:29:40,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:29:40,658 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-09-11 15:29:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:29:40,671 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-09-11 15:29:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:29:40,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-11 15:29:40,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:29:40,671 INFO L225 Difference]: With dead ends: 70 [2020-09-11 15:29:40,671 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:29:40,672 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 [2020-09-11 15:29:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:29:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:29:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:29:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:29:40,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-09-11 15:29:40,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:29:40,674 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:29:40,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:29:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:29:40,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:29:40,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 15:29:40,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:29:40 BasicIcfg [2020-09-11 15:29:40,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:29:40,686 INFO L168 Benchmark]: Toolchain (without parser) took 6332.70 ms. Allocated memory was 141.6 MB in the beginning and 281.5 MB in the end (delta: 140.0 MB). Free memory was 103.1 MB in the beginning and 123.8 MB in the end (delta: -20.8 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:40,688 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-11 15:29:40,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 831.79 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 160.5 MB in the end (delta: -57.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:40,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.62 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 158.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:40,691 INFO L168 Benchmark]: Boogie Preprocessor took 32.08 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 156.9 MB in the end (delta: 916.6 kB). Peak memory consumption was 916.6 kB. Max. memory is 7.1 GB. [2020-09-11 15:29:40,697 INFO L168 Benchmark]: RCFGBuilder took 513.47 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 132.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:40,699 INFO L168 Benchmark]: TraceAbstraction took 4886.32 ms. Allocated memory was 204.5 MB in the beginning and 281.5 MB in the end (delta: 77.1 MB). Free memory was 132.7 MB in the beginning and 123.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-09-11 15:29:40,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 831.79 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 160.5 MB in the end (delta: -57.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.62 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 158.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.08 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 156.9 MB in the end (delta: 916.6 kB). Peak memory consumption was 916.6 kB. Max. memory is 7.1 GB. * RCFGBuilder took 513.47 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 132.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4886.32 ms. Allocated memory was 204.5 MB in the beginning and 281.5 MB in the end (delta: 77.1 MB). Free memory was 132.7 MB in the beginning and 123.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 951 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 25 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 258 SDtfs, 237 SDslu, 349 SDs, 0 SdLazy, 196 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 6586 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...