/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/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:33:04,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:33:04,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:33:04,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:33:04,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:33:04,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:33:04,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:33:04,282 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 [2021-03-10 17:33:04,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:33:04,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:33:04,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:33:04,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:33:04,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:33:04,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:33:04,306 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:33:04,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:33:04,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:33:04,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:33:04,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:33:04,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:33:04,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:33:04,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:33:04,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:33:04,307 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:33:04,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:33:04,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:33:04,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:33:04,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:33:04,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:33:04,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:33:04,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:33:04,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:33:04,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:33:04,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:33:04,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:33:04,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:33:04,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:33:04,309 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:33:04,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:33:04,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:33:04,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:33:04,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:33:04,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:33:04,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:33:04,563 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:33:04,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2021-03-10 17:33:04,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9056c884/bf874aaf3e964d2ba3eff0ad2925817a/FLAGf2a2919f2 [2021-03-10 17:33:05,005 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:33:05,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2021-03-10 17:33:05,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9056c884/bf874aaf3e964d2ba3eff0ad2925817a/FLAGf2a2919f2 [2021-03-10 17:33:05,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9056c884/bf874aaf3e964d2ba3eff0ad2925817a [2021-03-10 17:33:05,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:33:05,033 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:33:05,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:33:05,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:33:05,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:33:05,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f57ce6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05, skipping insertion in model container [2021-03-10 17:33:05,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:33:05,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:33:05,233 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i[949,962] [2021-03-10 17:33:05,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:33:05,345 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:33:05,354 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i[949,962] [2021-03-10 17:33:05,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:33:05,424 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:33:05,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05 WrapperNode [2021-03-10 17:33:05,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:33:05,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:33:05,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:33:05,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:33:05,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:33:05,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:33:05,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:33:05,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:33:05,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (1/1) ... [2021-03-10 17:33:05,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:33:05,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:33:05,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:33:05,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:33:05,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (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 [2021-03-10 17:33:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:33:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:33:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:33:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:33:05,506 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:33:05,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:33:05,507 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:33:05,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:33:05,507 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:33:05,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:33:05,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:33:05,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:33:05,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:33:05,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:33:05,508 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:33:05,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:33:05,756 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:33:05,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:33:05 BoogieIcfgContainer [2021-03-10 17:33:05,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:33:05,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:33:05,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:33:05,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:33:05,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:33:05" (1/3) ... [2021-03-10 17:33:05,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ddec27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:33:05, skipping insertion in model container [2021-03-10 17:33:05,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:33:05" (2/3) ... [2021-03-10 17:33:05,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ddec27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:33:05, skipping insertion in model container [2021-03-10 17:33:05,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:33:05" (3/3) ... [2021-03-10 17:33:05,762 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2021-03-10 17:33:05,765 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:33:05,765 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:33:05,769 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:33:05,769 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:33:05,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,794 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,794 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,800 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,800 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,800 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,801 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,805 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,805 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,805 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,805 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:33:05,815 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:33:05,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:33:05,837 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:33:05,837 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:33:05,837 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:33:05,837 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:33:05,837 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:33:05,837 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:33:05,837 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:33:05,837 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:33:05,843 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-03-10 17:33:06,134 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:33:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:33:06,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:33:06,188 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:06,189 INFO L519 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] [2021-03-10 17:33:06,190 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:06,193 INFO L82 PathProgramCache]: Analyzing trace with hash 342406277, now seen corresponding path program 1 times [2021-03-10 17:33:06,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:06,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805808304] [2021-03-10 17:33:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:06,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805808304] [2021-03-10 17:33:06,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:06,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:06,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162584318] [2021-03-10 17:33:06,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:06,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:06,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:06,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:06,487 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:33:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:06,771 INFO L93 Difference]: Finished difference Result 17030 states and 58588 transitions. [2021-03-10 17:33:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:33:06,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 40 [2021-03-10 17:33:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:06,811 INFO L225 Difference]: With dead ends: 17030 [2021-03-10 17:33:06,811 INFO L226 Difference]: Without dead ends: 5375 [2021-03-10 17:33:06,812 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:33:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5375 states. [2021-03-10 17:33:06,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5375 to 4535. [2021-03-10 17:33:07,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4534 states have (on average 3.3729598588442875) internal successors, (15293), 4534 states have internal predecessors, (15293), 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) [2021-03-10 17:33:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 15293 transitions. [2021-03-10 17:33:07,039 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 15293 transitions. Word has length 40 [2021-03-10 17:33:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:07,040 INFO L480 AbstractCegarLoop]: Abstraction has 4535 states and 15293 transitions. [2021-03-10 17:33:07,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:33:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 15293 transitions. [2021-03-10 17:33:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 17:33:07,047 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:07,047 INFO L519 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] [2021-03-10 17:33:07,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:33:07,048 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1895058182, now seen corresponding path program 1 times [2021-03-10 17:33:07,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:07,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132570118] [2021-03-10 17:33:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:07,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132570118] [2021-03-10 17:33:07,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:07,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:07,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130010457] [2021-03-10 17:33:07,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:07,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:07,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:07,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:07,213 INFO L87 Difference]: Start difference. First operand 4535 states and 15293 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-03-10 17:33:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:07,448 INFO L93 Difference]: Finished difference Result 7416 states and 24655 transitions. [2021-03-10 17:33:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 17:33:07,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 42 [2021-03-10 17:33:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:07,472 INFO L225 Difference]: With dead ends: 7416 [2021-03-10 17:33:07,473 INFO L226 Difference]: Without dead ends: 5848 [2021-03-10 17:33:07,473 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 202.3ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-03-10 17:33:07,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2021-03-10 17:33:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 4500. [2021-03-10 17:33:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4500 states, 4499 states have (on average 3.3676372527228273) internal successors, (15151), 4499 states have internal predecessors, (15151), 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) [2021-03-10 17:33:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 15151 transitions. [2021-03-10 17:33:07,572 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 15151 transitions. Word has length 42 [2021-03-10 17:33:07,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:07,572 INFO L480 AbstractCegarLoop]: Abstraction has 4500 states and 15151 transitions. [2021-03-10 17:33:07,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-03-10 17:33:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 15151 transitions. [2021-03-10 17:33:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:33:07,582 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:07,582 INFO L519 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] [2021-03-10 17:33:07,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:33:07,582 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:07,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:07,583 INFO L82 PathProgramCache]: Analyzing trace with hash -238665818, now seen corresponding path program 1 times [2021-03-10 17:33:07,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:07,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476046798] [2021-03-10 17:33:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:07,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476046798] [2021-03-10 17:33:07,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:07,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:33:07,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247496983] [2021-03-10 17:33:07,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:33:07,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:07,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:33:07,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:33:07,733 INFO L87 Difference]: Start difference. First operand 4500 states and 15151 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2021-03-10 17:33:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:07,881 INFO L93 Difference]: Finished difference Result 6450 states and 21366 transitions. [2021-03-10 17:33:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:33:07,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 43 [2021-03-10 17:33:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:07,906 INFO L225 Difference]: With dead ends: 6450 [2021-03-10 17:33:07,906 INFO L226 Difference]: Without dead ends: 3342 [2021-03-10 17:33:07,907 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 142.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:33:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2021-03-10 17:33:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2862. [2021-03-10 17:33:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2861 states have (on average 3.2268437609227543) internal successors, (9232), 2861 states have internal predecessors, (9232), 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) [2021-03-10 17:33:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 9232 transitions. [2021-03-10 17:33:07,961 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 9232 transitions. Word has length 43 [2021-03-10 17:33:07,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:07,961 INFO L480 AbstractCegarLoop]: Abstraction has 2862 states and 9232 transitions. [2021-03-10 17:33:07,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2021-03-10 17:33:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 9232 transitions. [2021-03-10 17:33:07,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:33:07,965 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:07,965 INFO L519 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] [2021-03-10 17:33:07,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:33:07,965 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:07,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:07,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1721846773, now seen corresponding path program 1 times [2021-03-10 17:33:07,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:07,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507792385] [2021-03-10 17:33:07,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:08,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507792385] [2021-03-10 17:33:08,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:08,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:33:08,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761444707] [2021-03-10 17:33:08,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:33:08,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:08,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:33:08,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:33:08,038 INFO L87 Difference]: Start difference. First operand 2862 states and 9232 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-03-10 17:33:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:08,152 INFO L93 Difference]: Finished difference Result 3625 states and 11512 transitions. [2021-03-10 17:33:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:33:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 45 [2021-03-10 17:33:08,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:08,159 INFO L225 Difference]: With dead ends: 3625 [2021-03-10 17:33:08,159 INFO L226 Difference]: Without dead ends: 2609 [2021-03-10 17:33:08,160 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 88.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:33:08,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2021-03-10 17:33:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 2609. [2021-03-10 17:33:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 3.1767638036809815) internal successors, (8285), 2608 states have internal predecessors, (8285), 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) [2021-03-10 17:33:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 8285 transitions. [2021-03-10 17:33:08,210 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 8285 transitions. Word has length 45 [2021-03-10 17:33:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:08,210 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 8285 transitions. [2021-03-10 17:33:08,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-03-10 17:33:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 8285 transitions. [2021-03-10 17:33:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:33:08,214 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:08,214 INFO L519 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] [2021-03-10 17:33:08,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:33:08,214 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:08,215 INFO L82 PathProgramCache]: Analyzing trace with hash 955374472, now seen corresponding path program 1 times [2021-03-10 17:33:08,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:08,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069963238] [2021-03-10 17:33:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:08,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069963238] [2021-03-10 17:33:08,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:08,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:08,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268318460] [2021-03-10 17:33:08,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:08,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:08,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:08,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:08,291 INFO L87 Difference]: Start difference. First operand 2609 states and 8285 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-03-10 17:33:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:08,397 INFO L93 Difference]: Finished difference Result 2729 states and 8395 transitions. [2021-03-10 17:33:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:33:08,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2021-03-10 17:33:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:08,401 INFO L225 Difference]: With dead ends: 2729 [2021-03-10 17:33:08,401 INFO L226 Difference]: Without dead ends: 1877 [2021-03-10 17:33:08,402 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:33:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2021-03-10 17:33:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1877. [2021-03-10 17:33:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1876 states have (on average 3.025586353944563) internal successors, (5676), 1876 states have internal predecessors, (5676), 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) [2021-03-10 17:33:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 5676 transitions. [2021-03-10 17:33:08,433 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 5676 transitions. Word has length 46 [2021-03-10 17:33:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:08,434 INFO L480 AbstractCegarLoop]: Abstraction has 1877 states and 5676 transitions. [2021-03-10 17:33:08,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-03-10 17:33:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 5676 transitions. [2021-03-10 17:33:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:33:08,438 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:08,438 INFO L519 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] [2021-03-10 17:33:08,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:33:08,438 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:08,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:08,439 INFO L82 PathProgramCache]: Analyzing trace with hash 949050761, now seen corresponding path program 1 times [2021-03-10 17:33:08,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:08,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118976583] [2021-03-10 17:33:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:08,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118976583] [2021-03-10 17:33:08,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:08,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:33:08,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964487710] [2021-03-10 17:33:08,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:33:08,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:08,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:33:08,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:33:08,544 INFO L87 Difference]: Start difference. First operand 1877 states and 5676 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2021-03-10 17:33:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:08,650 INFO L93 Difference]: Finished difference Result 1517 states and 4422 transitions. [2021-03-10 17:33:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:33:08,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 48 [2021-03-10 17:33:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:08,653 INFO L225 Difference]: With dead ends: 1517 [2021-03-10 17:33:08,653 INFO L226 Difference]: Without dead ends: 953 [2021-03-10 17:33:08,653 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 89.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:33:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-03-10 17:33:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 921. [2021-03-10 17:33:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 2.8097826086956523) internal successors, (2585), 920 states have internal predecessors, (2585), 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) [2021-03-10 17:33:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 2585 transitions. [2021-03-10 17:33:08,674 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 2585 transitions. Word has length 48 [2021-03-10 17:33:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:08,674 INFO L480 AbstractCegarLoop]: Abstraction has 921 states and 2585 transitions. [2021-03-10 17:33:08,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2021-03-10 17:33:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 2585 transitions. [2021-03-10 17:33:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:33:08,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:33:08,675 INFO L519 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] [2021-03-10 17:33:08,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:33:08,676 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:33:08,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:33:08,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1493789335, now seen corresponding path program 1 times [2021-03-10 17:33:08,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:33:08,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082192336] [2021-03-10 17:33:08,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:33:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:33:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:33:08,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082192336] [2021-03-10 17:33:08,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:33:08,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:33:08,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233742210] [2021-03-10 17:33:08,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:33:08,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:33:08,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:33:08,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:33:08,762 INFO L87 Difference]: Start difference. First operand 921 states and 2585 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 17:33:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:33:08,825 INFO L93 Difference]: Finished difference Result 1059 states and 2959 transitions. [2021-03-10 17:33:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:33:08,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-03-10 17:33:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:33:08,826 INFO L225 Difference]: With dead ends: 1059 [2021-03-10 17:33:08,827 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:33:08,828 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:33:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:33:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:33:08,828 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) [2021-03-10 17:33:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:33:08,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-03-10 17:33:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:33:08,829 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:33:08,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 17:33:08,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:33:08,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:33:08,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:33:08,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:33:08 BasicIcfg [2021-03-10 17:33:08,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:33:08,834 INFO L168 Benchmark]: Toolchain (without parser) took 3801.97 ms. Allocated memory was 346.0 MB in the beginning and 924.8 MB in the end (delta: 578.8 MB). Free memory was 308.9 MB in the beginning and 783.8 MB in the end (delta: -474.9 MB). Peak memory consumption was 106.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:08,834 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 326.9 MB in the beginning and 326.8 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:33:08,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.17 ms. Allocated memory is still 346.0 MB. Free memory was 308.2 MB in the beginning and 308.2 MB in the end (delta: 6.5 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:08,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.89 ms. Allocated memory is still 346.0 MB. Free memory was 308.2 MB in the beginning and 306.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:08,837 INFO L168 Benchmark]: Boogie Preprocessor took 12.14 ms. Allocated memory is still 346.0 MB. Free memory was 306.1 MB in the beginning and 305.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:08,838 INFO L168 Benchmark]: RCFGBuilder took 297.35 ms. Allocated memory is still 346.0 MB. Free memory was 305.0 MB in the beginning and 279.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:08,841 INFO L168 Benchmark]: TraceAbstraction took 3073.17 ms. Allocated memory was 346.0 MB in the beginning and 924.8 MB in the end (delta: 578.8 MB). Free memory was 279.8 MB in the beginning and 783.8 MB in the end (delta: -503.9 MB). Peak memory consumption was 75.9 MB. Max. memory is 16.0 GB. [2021-03-10 17:33:08,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 326.9 MB in the beginning and 326.8 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 390.17 ms. Allocated memory is still 346.0 MB. Free memory was 308.2 MB in the beginning and 308.2 MB in the end (delta: 6.5 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.89 ms. Allocated memory is still 346.0 MB. Free memory was 308.2 MB in the beginning and 306.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.14 ms. Allocated memory is still 346.0 MB. Free memory was 306.1 MB in the beginning and 305.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 297.35 ms. Allocated memory is still 346.0 MB. Free memory was 305.0 MB in the beginning and 279.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3073.17 ms. Allocated memory was 346.0 MB in the beginning and 924.8 MB in the end (delta: 578.8 MB). Free memory was 279.8 MB in the beginning and 783.8 MB in the end (delta: -503.9 MB). Peak memory consumption was 75.9 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2993.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 81.2ms, AutomataDifference: 1199.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 296.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 691 SDtfs, 1354 SDslu, 2333 SDs, 0 SdLazy, 297 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 178.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 807.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 471.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 2700 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.7ms SsaConstructionTime, 169.4ms SatisfiabilityAnalysisTime, 612.2ms InterpolantComputationTime, 316 NumberOfCodeBlocks, 316 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 1329 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...