/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/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 23:49:04,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 23:49:04,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 23:49:04,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 23:49:04,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 23:49:04,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 23:49:04,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 23:49:04,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 23:49:04,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 23:49:04,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 23:49:04,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 23:49:04,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 23:49:04,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 23:49:04,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 23:49:04,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 23:49:04,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 23:49:04,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 23:49:04,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 23:49:04,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 23:49:04,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 23:49:04,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 23:49:04,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 23:49:04,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 23:49:04,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 23:49:04,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 23:49:04,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 23:49:04,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 23:49:04,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 23:49:04,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 23:49:04,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 23:49:04,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 23:49:04,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 23:49:04,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 23:49:04,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 23:49:04,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 23:49:04,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 23:49:04,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 23:49:04,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 23:49:04,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 23:49:04,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 23:49:04,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 23:49:04,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-16 23:49:04,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 23:49:04,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 23:49:04,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 23:49:04,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 23:49:04,750 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 23:49:04,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 23:49:04,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 23:49:04,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 23:49:04,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 23:49:04,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 23:49:04,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 23:49:04,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 23:49:04,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 23:49:04,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 23:49:04,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 23:49:04,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 23:49:04,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 23:49:04,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 23:49:04,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 23:49:04,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 23:49:04,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 23:49:04,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:49:04,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 23:49:04,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 23:49:04,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 23:49:04,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 23:49:04,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 23:49:04,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 23:49:04,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 23:49:04,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 23:49:05,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 23:49:05,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 23:49:05,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 23:49:05,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 23:49:05,250 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 23:49:05,251 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-09-16 23:49:05,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62911675/137033b9bfba478ab747ab5ec4714f2f/FLAGc73a693f9 [2020-09-16 23:49:05,991 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 23:49:05,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-09-16 23:49:06,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62911675/137033b9bfba478ab747ab5ec4714f2f/FLAGc73a693f9 [2020-09-16 23:49:06,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62911675/137033b9bfba478ab747ab5ec4714f2f [2020-09-16 23:49:06,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 23:49:06,240 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 23:49:06,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 23:49:06,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 23:49:06,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 23:49:06,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:49:06" (1/1) ... [2020-09-16 23:49:06,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c015b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:06, skipping insertion in model container [2020-09-16 23:49:06,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:49:06" (1/1) ... [2020-09-16 23:49:06,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 23:49:06,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 23:49:06,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:49:06,921 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 23:49:06,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:49:07,051 INFO L208 MainTranslator]: Completed translation [2020-09-16 23:49:07,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07 WrapperNode [2020-09-16 23:49:07,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 23:49:07,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 23:49:07,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 23:49:07,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 23:49:07,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... [2020-09-16 23:49:07,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... [2020-09-16 23:49:07,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 23:49:07,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 23:49:07,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 23:49:07,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 23:49:07,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... [2020-09-16 23:49:07,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... [2020-09-16 23:49:07,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... [2020-09-16 23:49:07,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... [2020-09-16 23:49:07,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... [2020-09-16 23:49:07,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... [2020-09-16 23:49:07,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... [2020-09-16 23:49:07,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 23:49:07,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 23:49:07,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 23:49:07,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 23:49:07,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:49:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 23:49:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 23:49:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 23:49:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 23:49:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 23:49:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 23:49:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 23:49:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 23:49:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 23:49:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 23:49:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 23:49:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 23:49:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 23:49:07,239 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 23:49:07,647 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 23:49:07,648 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 23:49:07,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:49:07 BoogieIcfgContainer [2020-09-16 23:49:07,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 23:49:07,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 23:49:07,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 23:49:07,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 23:49:07,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:49:06" (1/3) ... [2020-09-16 23:49:07,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6976e579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:49:07, skipping insertion in model container [2020-09-16 23:49:07,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:49:07" (2/3) ... [2020-09-16 23:49:07,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6976e579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:49:07, skipping insertion in model container [2020-09-16 23:49:07,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:49:07" (3/3) ... [2020-09-16 23:49:07,664 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-09-16 23:49:07,676 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 23:49:07,676 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 23:49:07,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 23:49:07,688 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 23:49:07,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,720 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,720 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,720 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,721 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,723 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,724 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,724 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,724 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,730 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,730 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,740 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,740 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:49:07,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 23:49:07,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 23:49:07,797 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 23:49:07,797 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 23:49:07,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 23:49:07,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 23:49:07,798 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 23:49:07,798 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 23:49:07,798 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 23:49:07,817 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-09-16 23:49:07,820 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-16 23:49:07,867 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-16 23:49:07,868 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:49:07,874 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 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. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:49:07,877 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-16 23:49:07,902 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-16 23:49:07,902 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:49:07,903 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 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. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:49:07,905 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 23:49:07,906 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 23:49:09,345 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-09-16 23:49:09,455 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-09-16 23:49:09,455 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-16 23:49:09,460 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-16 23:49:09,490 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-16 23:49:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-16 23:49:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 23:49:09,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:49:09,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:49:09,505 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:49:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:49:09,513 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-09-16 23:49:09,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:49:09,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821795015] [2020-09-16 23:49:09,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:49:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:49:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:49:09,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821795015] [2020-09-16 23:49:09,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:49:09,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:49:09,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330032710] [2020-09-16 23:49:09,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-16 23:49:09,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:49:09,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-16 23:49:09,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 23:49:09,766 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-16 23:49:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:49:09,803 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-16 23:49:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-16 23:49:09,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-16 23:49:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:49:09,830 INFO L225 Difference]: With dead ends: 362 [2020-09-16 23:49:09,831 INFO L226 Difference]: Without dead ends: 298 [2020-09-16 23:49:09,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 23:49:09,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-16 23:49:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-16 23:49:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-16 23:49:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-16 23:49:09,919 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-16 23:49:09,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:49:09,921 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-16 23:49:09,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-16 23:49:09,921 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-16 23:49:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 23:49:09,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:49:09,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:49:09,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 23:49:09,924 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:49:09,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:49:09,924 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-09-16 23:49:09,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:49:09,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902451906] [2020-09-16 23:49:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:49:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:49:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:49:10,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902451906] [2020-09-16 23:49:10,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:49:10,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:49:10,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588806367] [2020-09-16 23:49:10,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:49:10,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:49:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:49:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:49:10,104 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-09-16 23:49:10,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:49:10,215 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-09-16 23:49:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:49:10,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-16 23:49:10,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:49:10,220 INFO L225 Difference]: With dead ends: 330 [2020-09-16 23:49:10,220 INFO L226 Difference]: Without dead ends: 266 [2020-09-16 23:49:10,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:49:10,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-16 23:49:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-09-16 23:49:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-16 23:49:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-09-16 23:49:10,260 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-09-16 23:49:10,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:49:10,261 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-09-16 23:49:10,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:49:10,261 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-09-16 23:49:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 23:49:10,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:49:10,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:49:10,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 23:49:10,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:49:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:49:10,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-09-16 23:49:10,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:49:10,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066973190] [2020-09-16 23:49:10,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:49:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:49:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:49:10,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066973190] [2020-09-16 23:49:10,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:49:10,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:49:10,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306134927] [2020-09-16 23:49:10,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:49:10,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:49:10,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:49:10,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:49:10,398 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-09-16 23:49:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:49:10,475 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-09-16 23:49:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:49:10,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-16 23:49:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:49:10,482 INFO L225 Difference]: With dead ends: 290 [2020-09-16 23:49:10,483 INFO L226 Difference]: Without dead ends: 242 [2020-09-16 23:49:10,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:49:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-16 23:49:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-09-16 23:49:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-16 23:49:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-09-16 23:49:10,514 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-09-16 23:49:10,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:49:10,515 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-09-16 23:49:10,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:49:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-09-16 23:49:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 23:49:10,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:49:10,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:49:10,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 23:49:10,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:49:10,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:49:10,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-09-16 23:49:10,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:49:10,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917790149] [2020-09-16 23:49:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:49:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:49:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:49:10,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917790149] [2020-09-16 23:49:10,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:49:10,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:49:10,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842553068] [2020-09-16 23:49:10,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:49:10,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:49:10,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:49:10,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:49:10,640 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-09-16 23:49:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:49:10,695 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-09-16 23:49:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:49:10,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-16 23:49:10,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:49:10,697 INFO L225 Difference]: With dead ends: 302 [2020-09-16 23:49:10,697 INFO L226 Difference]: Without dead ends: 140 [2020-09-16 23:49:10,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 23:49:10,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-16 23:49:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-16 23:49:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-16 23:49:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-09-16 23:49:10,704 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-09-16 23:49:10,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:49:10,705 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-09-16 23:49:10,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:49:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-09-16 23:49:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 23:49:10,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:49:10,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:49:10,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 23:49:10,707 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:49:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:49:10,707 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-09-16 23:49:10,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:49:10,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279402883] [2020-09-16 23:49:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:49:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:49:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:49:10,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279402883] [2020-09-16 23:49:10,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:49:10,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:49:10,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856393183] [2020-09-16 23:49:10,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:49:10,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:49:10,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:49:10,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:49:10,846 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 6 states. [2020-09-16 23:49:10,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:49:10,991 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-09-16 23:49:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 23:49:10,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-16 23:49:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:49:10,995 INFO L225 Difference]: With dead ends: 176 [2020-09-16 23:49:10,995 INFO L226 Difference]: Without dead ends: 80 [2020-09-16 23:49:10,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-16 23:49:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-16 23:49:11,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-16 23:49:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-16 23:49:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-09-16 23:49:11,007 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-09-16 23:49:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:49:11,008 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-09-16 23:49:11,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:49:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-09-16 23:49:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 23:49:11,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:49:11,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:49:11,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 23:49:11,009 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:49:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:49:11,010 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-09-16 23:49:11,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:49:11,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377468342] [2020-09-16 23:49:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:49:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:49:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:49:11,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377468342] [2020-09-16 23:49:11,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:49:11,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:49:11,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619213110] [2020-09-16 23:49:11,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:49:11,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:49:11,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:49:11,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:49:11,140 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-09-16 23:49:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:49:11,178 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-09-16 23:49:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:49:11,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-16 23:49:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:49:11,180 INFO L225 Difference]: With dead ends: 91 [2020-09-16 23:49:11,180 INFO L226 Difference]: Without dead ends: 69 [2020-09-16 23:49:11,180 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 [2020-09-16 23:49:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-16 23:49:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-16 23:49:11,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-16 23:49:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-09-16 23:49:11,183 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-09-16 23:49:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:49:11,184 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-09-16 23:49:11,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:49:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-09-16 23:49:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 23:49:11,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:49:11,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:49:11,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 23:49:11,185 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:49:11,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:49:11,186 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-09-16 23:49:11,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:49:11,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802201412] [2020-09-16 23:49:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:49:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:49:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:49:11,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802201412] [2020-09-16 23:49:11,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:49:11,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:49:11,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402104417] [2020-09-16 23:49:11,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:49:11,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:49:11,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:49:11,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:49:11,288 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-09-16 23:49:11,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:49:11,330 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-09-16 23:49:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:49:11,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-16 23:49:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:49:11,332 INFO L225 Difference]: With dead ends: 65 [2020-09-16 23:49:11,332 INFO L226 Difference]: Without dead ends: 50 [2020-09-16 23:49:11,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:49:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-16 23:49:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-16 23:49:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-16 23:49:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-09-16 23:49:11,336 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-09-16 23:49:11,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:49:11,336 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-09-16 23:49:11,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:49:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-09-16 23:49:11,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-16 23:49:11,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:49:11,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:49:11,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 23:49:11,338 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:49:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:49:11,338 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-09-16 23:49:11,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:49:11,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767276355] [2020-09-16 23:49:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:49:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:49:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:49:11,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767276355] [2020-09-16 23:49:11,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:49:11,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 23:49:11,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515895543] [2020-09-16 23:49:11,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:49:11,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:49:11,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:49:11,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:49:11,494 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-09-16 23:49:11,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:49:11,550 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-09-16 23:49:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:49:11,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-16 23:49:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:49:11,551 INFO L225 Difference]: With dead ends: 43 [2020-09-16 23:49:11,551 INFO L226 Difference]: Without dead ends: 37 [2020-09-16 23:49:11,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:49:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-16 23:49:11,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-16 23:49:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-16 23:49:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-09-16 23:49:11,554 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-09-16 23:49:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:49:11,554 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-09-16 23:49:11,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:49:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-09-16 23:49:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 23:49:11,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:49:11,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:49:11,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 23:49:11,556 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:49:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:49:11,556 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-09-16 23:49:11,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:49:11,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165425102] [2020-09-16 23:49:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:49:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:49:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:49:11,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165425102] [2020-09-16 23:49:11,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:49:11,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:49:11,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319843072] [2020-09-16 23:49:11,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:49:11,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:49:11,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:49:11,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:49:11,630 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-09-16 23:49:11,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:49:11,656 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-09-16 23:49:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:49:11,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-16 23:49:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:49:11,657 INFO L225 Difference]: With dead ends: 36 [2020-09-16 23:49:11,657 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 23:49:11,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:49:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 23:49:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 23:49:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 23:49:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 23:49:11,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-16 23:49:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:49:11,659 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 23:49:11,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:49:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 23:49:11,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 23:49:11,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 23:49:11,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:49:11 BasicIcfg [2020-09-16 23:49:11,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 23:49:11,667 INFO L168 Benchmark]: Toolchain (without parser) took 5429.70 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 102.2 MB in the beginning and 127.8 MB in the end (delta: -25.6 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-09-16 23:49:11,668 INFO L168 Benchmark]: CDTParser took 1.56 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 23:49:11,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.84 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.6 MB in the beginning and 159.7 MB in the end (delta: -58.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-16 23:49:11,669 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.58 ms. Allocated memory is still 201.9 MB. Free memory was 159.0 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 23:49:11,670 INFO L168 Benchmark]: Boogie Preprocessor took 31.73 ms. Allocated memory is still 201.9 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:49:11,671 INFO L168 Benchmark]: RCFGBuilder took 511.47 ms. Allocated memory is still 201.9 MB. Free memory was 155.7 MB in the beginning and 133.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-16 23:49:11,672 INFO L168 Benchmark]: TraceAbstraction took 4009.39 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 133.0 MB in the beginning and 127.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-09-16 23:49:11,676 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.56 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 810.84 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.6 MB in the beginning and 159.7 MB in the end (delta: -58.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.58 ms. Allocated memory is still 201.9 MB. Free memory was 159.0 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.73 ms. Allocated memory is still 201.9 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 511.47 ms. Allocated memory is still 201.9 MB. Free memory was 155.7 MB in the beginning and 133.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4009.39 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 133.0 MB in the beginning and 127.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 695 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 171 SDtfs, 225 SDslu, 298 SDs, 0 SdLazy, 179 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...