/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 19:52:41,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 19:52:41,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 19:52:41,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 19:52:41,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 19:52:41,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 19:52:41,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 19:52:41,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 19:52:41,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 19:52:41,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 19:52:41,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 19:52:41,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 19:52:41,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 19:52:41,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 19:52:41,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 19:52:41,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 19:52:41,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 19:52:41,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 19:52:41,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 19:52:41,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 19:52:41,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 19:52:41,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 19:52:41,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 19:52:41,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 19:52:41,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 19:52:41,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 19:52:41,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 19:52:41,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 19:52:41,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 19:52:41,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 19:52:41,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 19:52:41,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 19:52:41,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 19:52:41,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 19:52:41,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 19:52:41,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 19:52:41,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 19:52:41,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 19:52:41,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 19:52:41,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 19:52:41,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 19:52:41,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 19:52:41,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 19:52:41,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 19:52:41,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 19:52:41,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 19:52:41,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 19:52:41,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 19:52:41,178 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 19:52:41,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 19:52:41,178 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 19:52:41,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 19:52:41,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 19:52:41,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 19:52:41,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 19:52:41,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 19:52:41,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 19:52:41,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 19:52:41,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 19:52:41,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 19:52:41,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 19:52:41,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 19:52:41,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 19:52:41,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 19:52:41,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 19:52:41,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:52:41,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 19:52:41,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 19:52:41,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 19:52:41,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 19:52:41,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 19:52:41,181 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 19:52:41,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 19:52:41,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 19:52:41,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 19:52:41,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 19:52:41,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 19:52:41,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 19:52:41,480 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 19:52:41,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-06-05 19:52:41,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adb95711f/da4670220700427a94484eb267222720/FLAG0c4a201f3 [2021-06-05 19:52:42,070 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 19:52:42,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-06-05 19:52:42,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adb95711f/da4670220700427a94484eb267222720/FLAG0c4a201f3 [2021-06-05 19:52:42,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adb95711f/da4670220700427a94484eb267222720 [2021-06-05 19:52:42,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 19:52:42,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 19:52:42,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 19:52:42,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 19:52:42,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 19:52:42,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:52:42" (1/1) ... [2021-06-05 19:52:42,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f956fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:42, skipping insertion in model container [2021-06-05 19:52:42,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:52:42" (1/1) ... [2021-06-05 19:52:42,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 19:52:42,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 19:52:42,766 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-06-05 19:52:42,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:52:42,927 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 19:52:42,934 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-06-05 19:52:42,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:52:43,012 INFO L208 MainTranslator]: Completed translation [2021-06-05 19:52:43,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43 WrapperNode [2021-06-05 19:52:43,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 19:52:43,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 19:52:43,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 19:52:43,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 19:52:43,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (1/1) ... [2021-06-05 19:52:43,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (1/1) ... [2021-06-05 19:52:43,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 19:52:43,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 19:52:43,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 19:52:43,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 19:52:43,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (1/1) ... [2021-06-05 19:52:43,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (1/1) ... [2021-06-05 19:52:43,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (1/1) ... [2021-06-05 19:52:43,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (1/1) ... [2021-06-05 19:52:43,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (1/1) ... [2021-06-05 19:52:43,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (1/1) ... [2021-06-05 19:52:43,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (1/1) ... [2021-06-05 19:52:43,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 19:52:43,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 19:52:43,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 19:52:43,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 19:52:43,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (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 [2021-06-05 19:52:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 19:52:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 19:52:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 19:52:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 19:52:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 19:52:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 19:52:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 19:52:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 19:52:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 19:52:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 19:52:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 19:52:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 19:52:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 19:52:43,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 19:52:43,161 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 19:52:43,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 19:52:43,489 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 19:52:43,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:52:43 BoogieIcfgContainer [2021-06-05 19:52:43,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 19:52:43,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 19:52:43,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 19:52:43,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 19:52:43,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:52:42" (1/3) ... [2021-06-05 19:52:43,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a806da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:52:43, skipping insertion in model container [2021-06-05 19:52:43,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:43" (2/3) ... [2021-06-05 19:52:43,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a806da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:52:43, skipping insertion in model container [2021-06-05 19:52:43,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:52:43" (3/3) ... [2021-06-05 19:52:43,497 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-06-05 19:52:43,502 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 19:52:43,502 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 19:52:43,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 19:52:43,503 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 19:52:43,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:43,567 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 19:52:43,590 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 19:52:43,616 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 19:52:43,616 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 19:52:43,616 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 19:52:43,616 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 19:52:43,616 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 19:52:43,616 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 19:52:43,616 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 19:52:43,617 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 19:52:43,632 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-05 19:52:44,205 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:44,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:44,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 19:52:44,295 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:44,296 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:44,296 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:44,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:44,301 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-06-05 19:52:44,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:44,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563257700] [2021-06-05 19:52:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:44,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:44,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563257700] [2021-06-05 19:52:44,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563257700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:44,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:44,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:52:44,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108743296] [2021-06-05 19:52:44,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:52:44,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:44,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:52:44,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:52:44,766 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:45,234 INFO L93 Difference]: Finished difference Result 21089 states and 72806 transitions. [2021-06-05 19:52:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:52:45,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-05 19:52:45,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:45,305 INFO L225 Difference]: With dead ends: 21089 [2021-06-05 19:52:45,305 INFO L226 Difference]: Without dead ends: 7269 [2021-06-05 19:52:45,307 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:52:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2021-06-05 19:52:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 6135. [2021-06-05 19:52:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6135 states, 6134 states have (on average 3.373165960221715) internal successors, (20691), 6134 states have internal predecessors, (20691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6135 states to 6135 states and 20691 transitions. [2021-06-05 19:52:45,831 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 20691 transitions. Word has length 49 [2021-06-05 19:52:45,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:45,835 INFO L482 AbstractCegarLoop]: Abstraction has 6135 states and 20691 transitions. [2021-06-05 19:52:45,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 20691 transitions. [2021-06-05 19:52:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 19:52:45,857 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:45,857 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:45,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 19:52:45,858 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:45,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:45,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1824129874, now seen corresponding path program 1 times [2021-06-05 19:52:45,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:45,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499034777] [2021-06-05 19:52:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:46,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:46,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499034777] [2021-06-05 19:52:46,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499034777] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:46,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:46,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:46,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782365182] [2021-06-05 19:52:46,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:46,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:46,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:46,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:46,014 INFO L87 Difference]: Start difference. First operand 6135 states and 20691 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:46,486 INFO L93 Difference]: Finished difference Result 9517 states and 31675 transitions. [2021-06-05 19:52:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 19:52:46,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-05 19:52:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:46,531 INFO L225 Difference]: With dead ends: 9517 [2021-06-05 19:52:46,531 INFO L226 Difference]: Without dead ends: 7517 [2021-06-05 19:52:46,532 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 281.7ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-06-05 19:52:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2021-06-05 19:52:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 6104. [2021-06-05 19:52:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.362116991643454) internal successors, (20519), 6103 states have internal predecessors, (20519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 20519 transitions. [2021-06-05 19:52:46,806 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 20519 transitions. Word has length 51 [2021-06-05 19:52:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:46,807 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 20519 transitions. [2021-06-05 19:52:46,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 20519 transitions. [2021-06-05 19:52:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 19:52:46,821 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:46,821 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:46,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 19:52:46,822 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:46,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1915177392, now seen corresponding path program 1 times [2021-06-05 19:52:46,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:46,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602707678] [2021-06-05 19:52:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:46,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:46,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602707678] [2021-06-05 19:52:46,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602707678] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:46,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:46,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:46,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744617420] [2021-06-05 19:52:46,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:46,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:46,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:46,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:46,976 INFO L87 Difference]: Start difference. First operand 6104 states and 20519 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:47,324 INFO L93 Difference]: Finished difference Result 8464 states and 28055 transitions. [2021-06-05 19:52:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:52:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-05 19:52:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:47,349 INFO L225 Difference]: With dead ends: 8464 [2021-06-05 19:52:47,350 INFO L226 Difference]: Without dead ends: 4308 [2021-06-05 19:52:47,350 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 164.1ms TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-06-05 19:52:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2021-06-05 19:52:47,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3848. [2021-06-05 19:52:47,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.260722641018976) internal successors, (12544), 3847 states have internal predecessors, (12544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12544 transitions. [2021-06-05 19:52:47,517 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12544 transitions. Word has length 51 [2021-06-05 19:52:47,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:47,519 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12544 transitions. [2021-06-05 19:52:47,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12544 transitions. [2021-06-05 19:52:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 19:52:47,533 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:47,533 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:47,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 19:52:47,533 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:47,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1721389007, now seen corresponding path program 1 times [2021-06-05 19:52:47,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:47,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467608705] [2021-06-05 19:52:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:47,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:47,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467608705] [2021-06-05 19:52:47,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467608705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:47,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:47,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:52:47,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762483053] [2021-06-05 19:52:47,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:52:47,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:47,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:52:47,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:52:47,672 INFO L87 Difference]: Start difference. First operand 3848 states and 12544 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:47,785 INFO L93 Difference]: Finished difference Result 4248 states and 13759 transitions. [2021-06-05 19:52:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:52:47,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 19:52:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:47,798 INFO L225 Difference]: With dead ends: 4248 [2021-06-05 19:52:47,798 INFO L226 Difference]: Without dead ends: 3548 [2021-06-05 19:52:47,799 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 98.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:52:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2021-06-05 19:52:47,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3548. [2021-06-05 19:52:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3547 states have (on average 3.2320270651254583) internal successors, (11464), 3547 states have internal predecessors, (11464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 11464 transitions. [2021-06-05 19:52:47,899 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 11464 transitions. Word has length 53 [2021-06-05 19:52:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:47,901 INFO L482 AbstractCegarLoop]: Abstraction has 3548 states and 11464 transitions. [2021-06-05 19:52:47,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:47,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 11464 transitions. [2021-06-05 19:52:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 19:52:47,910 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:47,910 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:47,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 19:52:47,914 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:47,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2011978162, now seen corresponding path program 1 times [2021-06-05 19:52:47,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:47,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384619148] [2021-06-05 19:52:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:48,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:48,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384619148] [2021-06-05 19:52:48,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384619148] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:48,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:48,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:48,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960291950] [2021-06-05 19:52:48,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:48,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:48,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:48,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:48,086 INFO L87 Difference]: Start difference. First operand 3548 states and 11464 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:48,237 INFO L93 Difference]: Finished difference Result 4698 states and 15060 transitions. [2021-06-05 19:52:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:52:48,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 19:52:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:48,245 INFO L225 Difference]: With dead ends: 4698 [2021-06-05 19:52:48,246 INFO L226 Difference]: Without dead ends: 2158 [2021-06-05 19:52:48,246 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 179.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-05 19:52:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-06-05 19:52:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2158. [2021-06-05 19:52:48,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 2157 states have (on average 3.1349095966620304) internal successors, (6762), 2157 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:48,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 6762 transitions. [2021-06-05 19:52:48,299 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 6762 transitions. Word has length 55 [2021-06-05 19:52:48,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:48,299 INFO L482 AbstractCegarLoop]: Abstraction has 2158 states and 6762 transitions. [2021-06-05 19:52:48,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:48,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 6762 transitions. [2021-06-05 19:52:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 19:52:48,304 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:48,304 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:48,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 19:52:48,305 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:48,305 INFO L82 PathProgramCache]: Analyzing trace with hash 220416866, now seen corresponding path program 1 times [2021-06-05 19:52:48,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:48,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321022744] [2021-06-05 19:52:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:48,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:48,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321022744] [2021-06-05 19:52:48,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321022744] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:48,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:48,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:48,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686154609] [2021-06-05 19:52:48,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:48,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:48,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:48,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:48,393 INFO L87 Difference]: Start difference. First operand 2158 states and 6762 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:48,600 INFO L93 Difference]: Finished difference Result 3078 states and 9548 transitions. [2021-06-05 19:52:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:52:48,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-05 19:52:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:48,611 INFO L225 Difference]: With dead ends: 3078 [2021-06-05 19:52:48,611 INFO L226 Difference]: Without dead ends: 2422 [2021-06-05 19:52:48,611 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:52:48,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2021-06-05 19:52:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2038. [2021-06-05 19:52:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 2037 states have (on average 3.1183112420225823) internal successors, (6352), 2037 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 6352 transitions. [2021-06-05 19:52:48,716 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 6352 transitions. Word has length 56 [2021-06-05 19:52:48,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:48,716 INFO L482 AbstractCegarLoop]: Abstraction has 2038 states and 6352 transitions. [2021-06-05 19:52:48,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:48,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 6352 transitions. [2021-06-05 19:52:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 19:52:48,726 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:48,726 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:48,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 19:52:48,726 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:48,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:48,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1511387322, now seen corresponding path program 1 times [2021-06-05 19:52:48,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:48,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039790508] [2021-06-05 19:52:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:48,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:48,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039790508] [2021-06-05 19:52:48,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039790508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:48,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:48,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:52:48,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038199314] [2021-06-05 19:52:48,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:52:48,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:48,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:52:48,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:52:48,834 INFO L87 Difference]: Start difference. First operand 2038 states and 6352 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:48,966 INFO L93 Difference]: Finished difference Result 2598 states and 8005 transitions. [2021-06-05 19:52:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:52:48,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 19:52:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:48,973 INFO L225 Difference]: With dead ends: 2598 [2021-06-05 19:52:48,974 INFO L226 Difference]: Without dead ends: 1886 [2021-06-05 19:52:48,974 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:52:48,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-06-05 19:52:49,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2021-06-05 19:52:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 3.0870026525198937) internal successors, (5819), 1885 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 5819 transitions. [2021-06-05 19:52:49,028 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 5819 transitions. Word has length 57 [2021-06-05 19:52:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:49,028 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 5819 transitions. [2021-06-05 19:52:49,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 5819 transitions. [2021-06-05 19:52:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 19:52:49,032 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:49,033 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:49,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 19:52:49,033 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:49,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:49,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208255, now seen corresponding path program 1 times [2021-06-05 19:52:49,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:49,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903579593] [2021-06-05 19:52:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:49,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:49,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903579593] [2021-06-05 19:52:49,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903579593] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:49,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:49,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:49,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431180868] [2021-06-05 19:52:49,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:49,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:49,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:49,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:49,116 INFO L87 Difference]: Start difference. First operand 1886 states and 5819 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:49,254 INFO L93 Difference]: Finished difference Result 2096 states and 6322 transitions. [2021-06-05 19:52:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:52:49,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-05 19:52:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:49,260 INFO L225 Difference]: With dead ends: 2096 [2021-06-05 19:52:49,260 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 19:52:49,260 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 106.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:52:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 19:52:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1496. [2021-06-05 19:52:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 2.985953177257525) internal successors, (4464), 1495 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 4464 transitions. [2021-06-05 19:52:49,302 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 4464 transitions. Word has length 58 [2021-06-05 19:52:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:49,302 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 4464 transitions. [2021-06-05 19:52:49,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 4464 transitions. [2021-06-05 19:52:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 19:52:49,305 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:49,306 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:49,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 19:52:49,306 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:49,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1317711448, now seen corresponding path program 1 times [2021-06-05 19:52:49,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:49,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571626448] [2021-06-05 19:52:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:49,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:49,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571626448] [2021-06-05 19:52:49,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571626448] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:49,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:49,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:52:49,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764310905] [2021-06-05 19:52:49,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:52:49,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:49,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:52:49,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:52:49,415 INFO L87 Difference]: Start difference. First operand 1496 states and 4464 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:49,550 INFO L93 Difference]: Finished difference Result 1325 states and 3840 transitions. [2021-06-05 19:52:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 19:52:49,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 19:52:49,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:49,552 INFO L225 Difference]: With dead ends: 1325 [2021-06-05 19:52:49,552 INFO L226 Difference]: Without dead ends: 693 [2021-06-05 19:52:49,553 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:52:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-06-05 19:52:49,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2021-06-05 19:52:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 2.7846820809248554) internal successors, (1927), 692 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1927 transitions. [2021-06-05 19:52:49,566 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1927 transitions. Word has length 59 [2021-06-05 19:52:49,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:49,566 INFO L482 AbstractCegarLoop]: Abstraction has 693 states and 1927 transitions. [2021-06-05 19:52:49,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,567 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1927 transitions. [2021-06-05 19:52:49,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 19:52:49,568 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:49,568 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:49,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 19:52:49,568 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:49,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:49,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2004716633, now seen corresponding path program 1 times [2021-06-05 19:52:49,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:49,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805809407] [2021-06-05 19:52:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:49,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:49,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805809407] [2021-06-05 19:52:49,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805809407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:49,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:49,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:49,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299142158] [2021-06-05 19:52:49,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:49,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:49,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:49,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:49,643 INFO L87 Difference]: Start difference. First operand 693 states and 1927 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:49,705 INFO L93 Difference]: Finished difference Result 639 states and 1765 transitions. [2021-06-05 19:52:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 19:52:49,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-06-05 19:52:49,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:49,705 INFO L225 Difference]: With dead ends: 639 [2021-06-05 19:52:49,706 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 19:52:49,706 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:52:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 19:52:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 19:52:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 19:52:49,706 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-05 19:52:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:49,707 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 19:52:49,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 19:52:49,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 19:52:49,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 19:52:49,709 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 19:52:49,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:52:49 BasicIcfg [2021-06-05 19:52:49,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 19:52:49,712 INFO L168 Benchmark]: Toolchain (without parser) took 7176.90 ms. Allocated memory was 335.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 297.7 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 219.2 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:49,712 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 335.5 MB. Free memory was 316.1 MB in the beginning and 316.0 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:52:49,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.72 ms. Allocated memory is still 335.5 MB. Free memory was 297.5 MB in the beginning and 297.2 MB in the end (delta: 296.1 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:49,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.64 ms. Allocated memory is still 335.5 MB. Free memory was 297.2 MB in the beginning and 295.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:49,713 INFO L168 Benchmark]: Boogie Preprocessor took 26.39 ms. Allocated memory is still 335.5 MB. Free memory was 295.1 MB in the beginning and 293.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:49,713 INFO L168 Benchmark]: RCFGBuilder took 416.91 ms. Allocated memory is still 335.5 MB. Free memory was 293.5 MB in the beginning and 268.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:49,713 INFO L168 Benchmark]: TraceAbstraction took 6219.43 ms. Allocated memory was 335.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 268.9 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 191.0 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:49,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 335.5 MB. Free memory was 316.1 MB in the beginning and 316.0 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 476.72 ms. Allocated memory is still 335.5 MB. Free memory was 297.5 MB in the beginning and 297.2 MB in the end (delta: 296.1 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.64 ms. Allocated memory is still 335.5 MB. Free memory was 297.2 MB in the beginning and 295.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.39 ms. Allocated memory is still 335.5 MB. Free memory was 295.1 MB in the beginning and 293.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 416.91 ms. Allocated memory is still 335.5 MB. Free memory was 293.5 MB in the beginning and 268.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6219.43 ms. Allocated memory was 335.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 268.9 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 191.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6094.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 168.6ms, AutomataDifference: 2471.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 588.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1067 SDtfs, 1564 SDslu, 3548 SDs, 0 SdLazy, 466 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 408.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1461.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1319.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 3391 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.3ms SsaConstructionTime, 236.8ms SatisfiabilityAnalysisTime, 1063.2ms InterpolantComputationTime, 550 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 2210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...