/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:38:24,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:38:24,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:38:24,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:38:24,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:38:24,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:38:24,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:38:24,505 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-Separate.epf [2021-05-21 23:38:24,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:38:24,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:38:24,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:38:24,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:38:24,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:38:24,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:38:24,534 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:38:24,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:38:24,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:38:24,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:38:24,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:38:24,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:38:24,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:38:24,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:38:24,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:38:24,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:38:24,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:38:24,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:38:24,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:38:24,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:38:24,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:38:24,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:38:24,537 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:38:24,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:38:24,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:38:24,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:38:24,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:38:24,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:38:24,776 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:38:24,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2021-05-21 23:38:24,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39031b2af/45439609539143c9a9cdb7c5bdcbf262/FLAG545c435d6 [2021-05-21 23:38:25,229 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:38:25,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2021-05-21 23:38:25,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39031b2af/45439609539143c9a9cdb7c5bdcbf262/FLAG545c435d6 [2021-05-21 23:38:25,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39031b2af/45439609539143c9a9cdb7c5bdcbf262 [2021-05-21 23:38:25,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:38:25,614 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:38:25,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:38:25,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:38:25,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:38:25,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:25,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346aa622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25, skipping insertion in model container [2021-05-21 23:38:25,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:25,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:38:25,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:38:25,763 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/safe028_pso.opt.i[949,962] [2021-05-21 23:38:25,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:38:25,902 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:38:25,910 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/safe028_pso.opt.i[949,962] [2021-05-21 23:38:25,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:38:25,975 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:38:25,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25 WrapperNode [2021-05-21 23:38:25,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:38:25,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:38:25,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:38:25,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:38:25,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:25,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:25,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:38:25,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:38:25,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:38:25,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:38:26,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:26,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:26,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:26,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:26,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:26,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:26,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (1/1) ... [2021-05-21 23:38:26,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:38:26,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:38:26,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:38:26,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:38:26,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (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 [2021-05-21 23:38:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:38:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:38:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:38:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:38:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:38:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:38:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:38:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:38:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 23:38:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 23:38:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:38:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:38:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:38:26,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:38:26,067 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 23:38:26,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:38:26,365 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:38:26,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:38:26 BoogieIcfgContainer [2021-05-21 23:38:26,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:38:26,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:38:26,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:38:26,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:38:26,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:38:25" (1/3) ... [2021-05-21 23:38:26,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2b22bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:38:26, skipping insertion in model container [2021-05-21 23:38:26,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:25" (2/3) ... [2021-05-21 23:38:26,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2b22bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:38:26, skipping insertion in model container [2021-05-21 23:38:26,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:38:26" (3/3) ... [2021-05-21 23:38:26,372 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.opt.i [2021-05-21 23:38:26,378 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:38:26,378 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:38:26,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:38:26,379 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:38:26,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,403 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,408 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,408 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,411 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,411 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,413 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,415 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,415 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,417 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,418 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,423 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,423 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,424 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,424 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,424 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,424 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:26,427 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:38:26,441 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:38:26,454 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:38:26,455 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:38:26,455 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:38:26,455 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:38:26,455 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:38:26,455 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:38:26,455 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:38:26,455 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:38:26,462 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-05-21 23:38:26,720 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 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) [2021-05-21 23:38:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 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) [2021-05-21 23:38:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 23:38:26,785 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:26,785 INFO L521 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] [2021-05-21 23:38:26,786 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:26,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:26,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1358275693, now seen corresponding path program 1 times [2021-05-21 23:38:26,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:26,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715707471] [2021-05-21 23:38:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:38:27,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:27,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715707471] [2021-05-21 23:38:27,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715707471] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:27,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:27,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:38:27,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607475672] [2021-05-21 23:38:27,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:38:27,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:27,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:38:27,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:38:27,122 INFO L87 Difference]: Start difference. First operand has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 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) [2021-05-21 23:38:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:27,342 INFO L93 Difference]: Finished difference Result 10487 states and 36117 transitions. [2021-05-21 23:38:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:38:27,344 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 [2021-05-21 23:38:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:27,377 INFO L225 Difference]: With dead ends: 10487 [2021-05-21 23:38:27,377 INFO L226 Difference]: Without dead ends: 3977 [2021-05-21 23:38:27,378 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:38:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-05-21 23:38:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3977. [2021-05-21 23:38:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3976 states have (on average 3.358148893360161) internal successors, (13352), 3976 states have internal predecessors, (13352), 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) [2021-05-21 23:38:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 13352 transitions. [2021-05-21 23:38:27,536 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 13352 transitions. Word has length 49 [2021-05-21 23:38:27,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:27,538 INFO L482 AbstractCegarLoop]: Abstraction has 3977 states and 13352 transitions. [2021-05-21 23:38:27,539 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) [2021-05-21 23:38:27,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 13352 transitions. [2021-05-21 23:38:27,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-21 23:38:27,549 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:27,549 INFO L521 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] [2021-05-21 23:38:27,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:38:27,550 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:27,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1479528556, now seen corresponding path program 1 times [2021-05-21 23:38:27,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:27,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116733311] [2021-05-21 23:38:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:38:27,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:27,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116733311] [2021-05-21 23:38:27,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116733311] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:27,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:27,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:38:27,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878623940] [2021-05-21 23:38:27,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:38:27,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:27,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:38:27,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:38:27,693 INFO L87 Difference]: Start difference. First operand 3977 states and 13352 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) [2021-05-21 23:38:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:27,901 INFO L93 Difference]: Finished difference Result 5517 states and 18424 transitions. [2021-05-21 23:38:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:38:27,901 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 [2021-05-21 23:38:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:27,915 INFO L225 Difference]: With dead ends: 5517 [2021-05-21 23:38:27,915 INFO L226 Difference]: Without dead ends: 2997 [2021-05-21 23:38:27,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 23:38:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2021-05-21 23:38:27,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2997. [2021-05-21 23:38:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2996 states have (on average 3.246328437917223) internal successors, (9726), 2996 states have internal predecessors, (9726), 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) [2021-05-21 23:38:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 9726 transitions. [2021-05-21 23:38:27,994 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 9726 transitions. Word has length 51 [2021-05-21 23:38:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:27,994 INFO L482 AbstractCegarLoop]: Abstraction has 2997 states and 9726 transitions. [2021-05-21 23:38:27,994 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) [2021-05-21 23:38:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 9726 transitions. [2021-05-21 23:38:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-21 23:38:28,002 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:28,003 INFO L521 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] [2021-05-21 23:38:28,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:38:28,003 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1588041683, now seen corresponding path program 1 times [2021-05-21 23:38:28,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:28,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210341475] [2021-05-21 23:38:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:38:28,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:28,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210341475] [2021-05-21 23:38:28,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210341475] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:28,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:28,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:38:28,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355268411] [2021-05-21 23:38:28,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:38:28,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:28,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:38:28,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:38:28,101 INFO L87 Difference]: Start difference. First operand 2997 states and 9726 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) [2021-05-21 23:38:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:28,229 INFO L93 Difference]: Finished difference Result 3685 states and 11834 transitions. [2021-05-21 23:38:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:38:28,229 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 [2021-05-21 23:38:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:28,241 INFO L225 Difference]: With dead ends: 3685 [2021-05-21 23:38:28,241 INFO L226 Difference]: Without dead ends: 2789 [2021-05-21 23:38:28,241 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 89.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:38:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-05-21 23:38:28,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2789. [2021-05-21 23:38:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2788 states have (on average 3.2044476327116214) internal successors, (8934), 2788 states have internal predecessors, (8934), 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) [2021-05-21 23:38:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 8934 transitions. [2021-05-21 23:38:28,294 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 8934 transitions. Word has length 53 [2021-05-21 23:38:28,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:28,295 INFO L482 AbstractCegarLoop]: Abstraction has 2789 states and 8934 transitions. [2021-05-21 23:38:28,295 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) [2021-05-21 23:38:28,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 8934 transitions. [2021-05-21 23:38:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 23:38:28,300 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:28,300 INFO L521 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] [2021-05-21 23:38:28,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:38:28,300 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash -126543039, now seen corresponding path program 1 times [2021-05-21 23:38:28,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:28,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20822462] [2021-05-21 23:38:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:38:28,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:28,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20822462] [2021-05-21 23:38:28,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20822462] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:28,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:28,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:38:28,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106737366] [2021-05-21 23:38:28,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:38:28,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:28,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:38:28,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:38:28,418 INFO L87 Difference]: Start difference. First operand 2789 states and 8934 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-05-21 23:38:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:28,528 INFO L93 Difference]: Finished difference Result 2885 states and 9004 transitions. [2021-05-21 23:38:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:38:28,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-05-21 23:38:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:28,537 INFO L225 Difference]: With dead ends: 2885 [2021-05-21 23:38:28,537 INFO L226 Difference]: Without dead ends: 2117 [2021-05-21 23:38:28,538 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:38:28,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2021-05-21 23:38:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2117. [2021-05-21 23:38:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 2116 states have (on average 3.0718336483931945) internal successors, (6500), 2116 states have internal predecessors, (6500), 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) [2021-05-21 23:38:28,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 6500 transitions. [2021-05-21 23:38:28,573 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 6500 transitions. Word has length 54 [2021-05-21 23:38:28,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:28,574 INFO L482 AbstractCegarLoop]: Abstraction has 2117 states and 6500 transitions. [2021-05-21 23:38:28,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-05-21 23:38:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 6500 transitions. [2021-05-21 23:38:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-21 23:38:28,578 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:28,578 INFO L521 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] [2021-05-21 23:38:28,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:38:28,581 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:28,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1788375678, now seen corresponding path program 1 times [2021-05-21 23:38:28,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:28,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841913935] [2021-05-21 23:38:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:38:28,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:28,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841913935] [2021-05-21 23:38:28,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841913935] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:28,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:28,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:38:28,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608466363] [2021-05-21 23:38:28,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:38:28,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:28,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:38:28,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:38:28,684 INFO L87 Difference]: Start difference. First operand 2117 states and 6500 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2021-05-21 23:38:28,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:28,811 INFO L93 Difference]: Finished difference Result 1766 states and 5267 transitions. [2021-05-21 23:38:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 23:38:28,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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 [2021-05-21 23:38:28,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:28,816 INFO L225 Difference]: With dead ends: 1766 [2021-05-21 23:38:28,816 INFO L226 Difference]: Without dead ends: 1334 [2021-05-21 23:38:28,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:38:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-05-21 23:38:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1334. [2021-05-21 23:38:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 2.9182295573893473) internal successors, (3890), 1333 states have internal predecessors, (3890), 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) [2021-05-21 23:38:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 3890 transitions. [2021-05-21 23:38:28,836 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 3890 transitions. Word has length 56 [2021-05-21 23:38:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:28,836 INFO L482 AbstractCegarLoop]: Abstraction has 1334 states and 3890 transitions. [2021-05-21 23:38:28,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2021-05-21 23:38:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 3890 transitions. [2021-05-21 23:38:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-21 23:38:28,839 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:28,839 INFO L521 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] [2021-05-21 23:38:28,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 23:38:28,839 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:28,839 INFO L82 PathProgramCache]: Analyzing trace with hash 659193076, now seen corresponding path program 1 times [2021-05-21 23:38:28,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:28,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236803077] [2021-05-21 23:38:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:38:28,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:28,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236803077] [2021-05-21 23:38:28,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236803077] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:28,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:28,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:38:28,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977614972] [2021-05-21 23:38:28,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:38:28,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:28,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:38:28,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:38:28,923 INFO L87 Difference]: Start difference. First operand 1334 states and 3890 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-05-21 23:38:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:28,992 INFO L93 Difference]: Finished difference Result 2025 states and 5915 transitions. [2021-05-21 23:38:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 23:38:28,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 60 [2021-05-21 23:38:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:28,996 INFO L225 Difference]: With dead ends: 2025 [2021-05-21 23:38:28,996 INFO L226 Difference]: Without dead ends: 998 [2021-05-21 23:38:28,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:38:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-05-21 23:38:29,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2021-05-21 23:38:29,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 2.803410230692076) internal successors, (2795), 997 states have internal predecessors, (2795), 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) [2021-05-21 23:38:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 2795 transitions. [2021-05-21 23:38:29,011 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 2795 transitions. Word has length 60 [2021-05-21 23:38:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:29,011 INFO L482 AbstractCegarLoop]: Abstraction has 998 states and 2795 transitions. [2021-05-21 23:38:29,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-05-21 23:38:29,011 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 2795 transitions. [2021-05-21 23:38:29,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-21 23:38:29,013 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:29,013 INFO L521 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] [2021-05-21 23:38:29,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 23:38:29,013 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1157380626, now seen corresponding path program 2 times [2021-05-21 23:38:29,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:29,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953364989] [2021-05-21 23:38:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:38:29,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:29,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953364989] [2021-05-21 23:38:29,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953364989] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:29,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:29,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:38:29,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100694428] [2021-05-21 23:38:29,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:38:29,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:29,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:38:29,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:38:29,100 INFO L87 Difference]: Start difference. First operand 998 states and 2795 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-05-21 23:38:29,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:29,165 INFO L93 Difference]: Finished difference Result 944 states and 2633 transitions. [2021-05-21 23:38:29,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 23:38:29,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 60 [2021-05-21 23:38:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:29,166 INFO L225 Difference]: With dead ends: 944 [2021-05-21 23:38:29,166 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:38:29,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:38:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:38:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:38:29,166 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) [2021-05-21 23:38:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:38:29,167 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-05-21 23:38:29,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:29,167 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:38:29,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-05-21 23:38:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:38:29,167 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:38:29,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 23:38:29,167 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:38:29,169 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 23:38:29,170 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:38:29,170 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:38:29,170 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:38:29,170 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:38:29,170 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:38:29,170 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:38:29,170 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:38:29,170 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:38:29,173 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-05-21 23:38:29,369 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 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) [2021-05-21 23:38:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 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) [2021-05-21 23:38:29,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:38:29,405 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:38:29,405 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:38:29,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:38:29 BasicIcfg [2021-05-21 23:38:29,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:38:29,410 INFO L168 Benchmark]: Toolchain (without parser) took 3793.85 ms. Allocated memory was 390.1 MB in the beginning and 494.9 MB in the end (delta: 104.9 MB). Free memory was 351.9 MB in the beginning and 245.7 MB in the end (delta: 106.2 MB). Peak memory consumption was 213.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:29,412 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 390.1 MB. Free memory was 370.5 MB in the beginning and 370.4 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:38:29,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.04 ms. Allocated memory is still 390.1 MB. Free memory was 351.7 MB in the beginning and 352.5 MB in the end (delta: -834.4 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:29,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.38 ms. Allocated memory is still 390.1 MB. Free memory was 352.5 MB in the beginning and 350.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:29,413 INFO L168 Benchmark]: Boogie Preprocessor took 12.66 ms. Allocated memory is still 390.1 MB. Free memory was 350.4 MB in the beginning and 349.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:38:29,414 INFO L168 Benchmark]: RCFGBuilder took 355.36 ms. Allocated memory is still 390.1 MB. Free memory was 349.4 MB in the beginning and 323.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:29,414 INFO L168 Benchmark]: TraceAbstraction took 3039.46 ms. Allocated memory was 390.1 MB in the beginning and 494.9 MB in the end (delta: 104.9 MB). Free memory was 323.1 MB in the beginning and 245.7 MB in the end (delta: 77.5 MB). Peak memory consumption was 184.4 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:29,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 390.1 MB. Free memory was 370.5 MB in the beginning and 370.4 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 355.04 ms. Allocated memory is still 390.1 MB. Free memory was 351.7 MB in the beginning and 352.5 MB in the end (delta: -834.4 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.38 ms. Allocated memory is still 390.1 MB. Free memory was 352.5 MB in the beginning and 350.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.66 ms. Allocated memory is still 390.1 MB. Free memory was 350.4 MB in the beginning and 349.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 355.36 ms. Allocated memory is still 390.1 MB. Free memory was 349.4 MB in the beginning and 323.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3039.46 ms. Allocated memory was 390.1 MB in the beginning and 494.9 MB in the end (delta: 104.9 MB). Free memory was 323.1 MB in the beginning and 245.7 MB in the end (delta: 77.5 MB). Peak memory consumption was 184.4 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 with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2714.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 93.2ms, AutomataDifference: 1044.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 265.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 703 SDtfs, 1061 SDslu, 2382 SDs, 0 SdLazy, 280 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 169.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 698.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8009occurred in iteration=0, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 347.1ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.5ms SsaConstructionTime, 169.8ms SatisfiabilityAnalysisTime, 609.6ms InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 235.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 35.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 199.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8009occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: 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...